Compounds and methods for the diagnosis and treatment of b. microti infection

ABSTRACT

Compounds and methods for the diagnosis and treatment of  B. microti  infection are disclosed. The compounds provided include polypeptides that contain at least one antigenic portion of a  B. microti  antigen and DNA sequences encoding such polypeptides. Antigenic epitopes of such antigens are also provided, together with pharmaceutical compositions and vaccines comprising such polypeptides, DNA sequences or antigenic epitopes. Diagnostic kits containing such polypeptides, DNA sequences or antigenic epitopes and a suitable detection reagent may be used for the detection of  B. microti  infection in patients and biological samples. Antibodies directed against such polypeptides and antigenic epitopes are also provided.

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application is a continuation-in-part of U.S. application Ser. No. 08/990,571, filed Dec. 11, 1997, is a continuation-in-part of U.S. application Ser. No. 08/845,258, filed Apr. 24, 1997, which is a continuation-in-part of U.S. application Ser. No. 08/723,142 filed Oct. 1, 1996.

TECHNICAL FIELD

[0002] The present invention relates generally to the detection of Babesia microti infection. In particular, the invention is related to polypeptides comprising a B. microti antigen, to antigenic epitopes of such an antigen and the use of such polypeptides and antigenic epitopes for the serodiagnosis and treatment of B. microti infection.

BACKGROUND OF THE INVENTION

[0003] Babesiosis is a malaria-like illness caused by the rodent parasite Babesia microti (B. microti) which is generally transmitted to humans by the same tick that is responsible for the transmission of Lyme disease and ehrlichiosis, thereby leading to the possibility of co-infection with babesiosis, Lyme disease and ehrlichiosis from a single tick bite. While the number of reported cases of B. microti infection in the United States is increasing rapidly, infection with B. microti, including co-infection with Lyme disease, often remains undetected for extended periods of time. Babesiosis is potentially fatal, particularly in the elderly and in patients with suppressed immune systems. Patients infected with both Lyme disease and babesiosis have more severe symptoms and prolonged illness compared to those with either infection alone.

[0004] The preferred treatments for Lyme disease, ehrlichiosis and babesiosis are different, with penicillins, such as doxycycline and amoxicillin, being most effective in treating Lyme disease, tetracycline being preferred for the treatment of ehrlichiosis, and anti-malarial drugs, such as quinine and clindamycin, being most effective in the treatment of babesiosis. Accurate and early diagnosis of B. microti infection is thus critical but methods currently employed for diagnosis are problematic.

[0005] All three tick-borne illnesses share the same flu-like symptoms of muscle aches, fever, headaches and fatigue, thus making clinical diagnosis difficult. Microscopic analysis of blood samples may provide false-negative results when patients are first seen in the clinic. Indirect fluorescent antibody staining methods for total immunoglobulins to B. microti may be used to diagnose babesiosis infection, but such methods are time-consuming and expensive. There thus remains a need in the art for improved methods for the detection of B. microti infection.

SUMMARY OF THE INVENTION

[0006] The present invention provides compositions and methods for the diagnosis and treatment of B. microti infection. In one aspect, polypeptides are provided comprising an immunogenic portion of a B. microti antigen, or a variant of such an antigen that differs only in conservative substitutions and/or modifications. In one embodiment, the antigen comprises an amino acid sequence encoded by a DNA sequence selected from the group consisting of (a) sequences recited in SEQ ID NO: 1-17, 37, 40, 42, 45, 50 and 51; (b) the complements of said sequences; and (c) sequences that hybridize to a sequence of (a) or (b) under moderately stringent conditions.

[0007] In another aspect, the present invention provides an antigenic epitope of a B. microti antigen comprising the amino acid sequence -X₁-X₂-X₃-X₄-X₅-Ser- (SEQ ID NO: 35), wherein X₁ is Glu or Gly, X₂ is Ala or Thr, X₃ is Gly or Val, X₄ is Trp or Gly and X₅ is Pro or Ser. In one embodiment of this aspect, X₁ is Glu, X₂ is Ala and X₃ is Gly. In a second embodiment X₁ is Gly, X₂ is Thr and X₅ is Pro. The present invention further provides polypeptides comprising at least two of the above antigenic epitopes, the epitopes being contiguous.

[0008] In yet another aspect, the present invention provides an antigenic epitope of a B. microti antigen comprising an amino acid sequence selected from the group consisting of SEQ ID NO: 36 and 39, together with polypeptides comprising at least two such antigenic epitopes, the epitopes being contiguous.

[0009] In a related aspect, DNA sequences encoding the above polypeptides, recombinant expression vectors comprising these DNA sequence and host cells transformed or transfected with such expression vectors are also provided.

[0010] In another aspect, the present invention provides fusion proteins comprising either a first and a second inventive polypeptide, a first and a second inventive antigenic epitope, or, alternatively, an inventive polypeptide and an inventive antigenic epitope.

[0011] In further aspects of the subject invention, methods and diagnostic kits are provided for detecting B. microti infection in a patient. In one embodiment, the method comprises: (a) contacting a biological sample with at least one polypeptide comprising an immunogenic portion of a B. microti antigen; and (b) detecting in the sample the presence of antibodies that bind to the polypeptide, thereby detecting B. microti infection in the biological sample. In other embodiments, the methods comprise: (a) contacting a biological sample with at least one of the above polypeptides or antigenic epitopes; and (b) detecting in the sample the presence of antibodies that bind to the polypeptide or antigenic epitope. Suitable biological samples include whole blood, sputum, serum, plasma, saliva, cerebrospinal fluid and urine. The diagnostic kits comprise one or more of the above polypeptides or antigenic epitopes in combination with a detection reagent.

[0012] The present invention also provides methods for detecting B. microti infection comprising: (a) obtaining a biological sample from a patient; (b) contacting the sample with at least two oligonucleotide primers in a polymerase chain reaction, at least one of the oligonucleotide primers being specific for a DNA sequence encoding the above polypeptides; and (c) detecting in the sample a DNA sequence that amplifies in the presence of the first and second oligonucleotide primers. In one embodiment, the oligonucleotide primer comprises at least about 10 contiguous nucleotides of a DNA sequence encoding the above polypeptides.

[0013] In a further aspect, the present invention provides a method for detecting B. microti infection in a patient comprising: (a) obtaining a biological sample from the patient; (b) contacting the sample with an oligonucleotide probe specific for a DNA sequence encoding the above polypeptides; and (c) detecting in the sample a DNA sequence that hybridizes to the oligonucleotide probe. In one embodiment of this aspect, the oligonucleotide probe comprises at least about 15 contiguous nucleotides of a DNA sequence encoding the above polypeptides.

[0014] In yet another aspect, the present invention provides antibodies, both polyclonal and monoclonal, that bind to the polypeptides described above, as well as methods for their use in the detection of B. microti infection.

[0015] Within other aspects, the present invention provides pharmaceutical compositions that comprise one or more of the above polypeptides or antigenic epitopes, or a DNA molecule encoding such polypeptides, and a physiologically acceptable carrier. The invention also provides vaccines comprising one or more of the inventive polypeptides or antigenic epitopes and a non-specific immune response enhancer, together with vaccines comprising one or more DNA sequences encoding such polypeptides and a non-specific immune response enhancer.

[0016] In yet another aspect, methods are provided for inducing protective immunity in a patient, comprising administering to a patient an effective amount of one or more of the above pharmaceutical compositions or vaccines.

[0017] These and other aspects of the present invention will become apparent upon reference to the following detailed description and attached drawings. All references disclosed herein are hereby incorporated by reference in their entirety as if each was incorporated individually.

BRIEF DESCRIPTION OF THE DRAWINGS

[0018]FIG. 1 shows the genomic sequence of the B. microti antigen BMNI-3 (SEQ ID NO: 3) including a translation of the putative open reading frame (SEQ ID NO: 49). An internal six amino acid repeat sequence (SEQ ID NO: 35) is indicated by vertical lines within the open reading frame.

[0019]FIG. 2a shows the reactivity of the B. microti antigens BMNI-3 and BMNI-6, and the peptides BABS-1 and BABS-4 with sera from B. microti-infected individuals and from normal donors as determined by ELISA.

[0020]FIG. 2b shows the reactivity of the B. microti antigens BMNI-4 and BMNI-15 with sera from B. microti-infected individuals and from normal donors as determined by ELISA.

[0021]FIG. 3 shows the reactivity of the B. microti antigens MN-10 and BMNI-20 with sera from B. microti-infected patients and from normal donors as determined by ELISA.

[0022]FIG. 4 shows the results of Western blot analysis of representative B. microti antigens of the present invention.

[0023]FIG. 5 shows the reactivity of purified recombinant B. microti antigen BMNI-3 with sera from B. microti-infected patients, Lyme disease-infected patients, ehrlichiosis-infected patients and normal donors as determined by Western blot analysis.

[0024]FIG. 6 shows an alignment of the repeat region of different homologues of the B. microti antigen BMNI-6, illustrating the geographic variation in the number and location of the repeats.

DETAILED DESCRIPTION OF THE INVENTION

[0025] As noted above, the present invention is generally directed to compositions and methods for the diagnosis and treatment of B. microti infection. In one aspect, the compositions of the subject invention include polypeptides that comprise at least one immunogenic portion of a B. microti antigen, or a variant of such an antigen that differs only in conservative substitutions and/or modifications.

[0026] As used herein, the term “polypeptide” encompasses amino acid chains of any length, including full length proteins (i.e., antigens), wherein the amino acid residues are linked by covalent peptide bonds. Thus, a polypeptide comprising an immunogenic portion of one of the above antigens may consist entirely of the immunogenic portion, or may contain additional sequences. The additional sequences may be derived from the native B. microti antigen or may be heterologous, and such sequences may (but need not) be immunogenic.

[0027] An “immunogenic portion” of an antigen is a portion that is capable of reacting with sera obtained from a B. microti-infected individual (i.e., generates an absorbance reading with sera from infected individuals that is at least three standard deviations above the absorbance obtained with sera from uninfected individuals, in a representative ELISA assay described herein). Polypeptides comprising at least an immunogenic portion of one or more B. microti antigens as described herein may generally be used, alone or in combination, to detect B. microti in a patient.

[0028] The compositions and methods of the present invention also encompass variants of the above polypeptides and DNA molecules. Such variants include, but are not limited to, naturally occurring allelic variants of the inventive sequences.

[0029] A polypeptide “variant,” as used herein, is a polypeptide that differs from the recited polypeptide only in conservative substitutions and/or modifications, such that the antigenic properties of the polypeptide are retained. In a preferred embodiment, variant polypeptides differ from an identified sequence by substitution, deletion or addition of five amino acids or fewer. Such variants may generally be identified by modifying one of the above polypeptide sequences, and evaluating the antigenic properties of the modified polypeptide using, for example, the representative procedures described herein. Polypeptide variants preferably exhibit at least about 70%, more preferably at least about 90% and most preferably at least about 95% identity (determined as described below) to the identified polypeptides.

[0030] As used herein, a “conservative substitution” is one in which an amino acid is substituted for another amino acid that has similar properties, such that one skilled in the art of peptide chemistry would expect the secondary structure and hydropathic nature of the polypeptide to be substantially unchanged. In general, the following groups of amino acids represent conservative changes: (1) ala, pro, gly, glu, asp, gln, asn, ser, thr; (2) cys, ser, tyr, thr; (3) val, ile, leu, met, ala, phe; (4) lys, arg, his; and (5) phe, tyr, trp, his.

[0031] Variants may also, or alternatively, contain other modifications, including the deletion or addition of amino acids that have minimal influence on the antigenic properties, secondary structure and hydropathic nature of the polypeptide. For example, a polypeptide may be conjugated to a signal (or leader) sequence at the N-terminal end of the protein which co-translationally or post-translationally directs transfer of the protein. The polypeptide may also be conjugated to a linker or other sequence for ease of synthesis, purification or identification of the polypeptide (e.g., poly-His), or to enhance binding of the polypeptide to a solid support. For example, a polypeptide may be conjugated to an immunoglobulin Fc region.

[0032] A nucleotide “variant” is a sequence that differs from the recited nucleotide sequence in having one or more nucleotide deletions, substitutions or additions. Such modifications may be readily introduced using standard mutagenesis techniques, such as oligonucleotide-directed site-specific mutagenesis as taught, for example, by Adelman et al. (DNA, 2:183, 1983). Nucleotide variants may be naturally occurring allelic variants, or non-naturally occurring variants. Variant nucleotide sequences preferably exhibit at least about 70%, more preferably at least about 80% and most preferably at least about 90% identity (determined as described below) to the recited sequence.

[0033] Two nucleotide or polypeptide sequences are said to be “identical” if the sequence of nucleotides or amino acid residues in the two sequences is the same when aligned for maximum correspondence as described below. Comparisons between two sequences are typically performed by comparing the sequences over a comparison window to identify and compare local regions of sequence similarity. A “comparison window” as used herein, refers to a segment of at least about 20 contiguous positions, usually 30 to about 75, 40 to about 50, in which a sequence may be compared to a reference sequence of the same number of contiguous positions after the two sequences are optimally aligned.

[0034] Optimal alignment of sequences for comparison may be conducted using the Megalign program in the Lasergene suite of bioinformatics software (DNASTAR, Inc., Madison, Wis.), using default parameters. This program embodies several alignment schemes described in the following references: Dayhoff, M. O. (1978) A model of evolutionary change in proteins—Matrices for detecting distant relationships. In Dayhoff, M. O. (ed.) Atlas of Protein Sequence and Structure, National Biomedical Resarch Foundaiton, Washington D.C. Vol. 5, Suppl. 3, pp. 345-358; Hein J. (1990) Unified Approach to Alignment and Phylogenes pp. 626-645 Methods in Enzymology vol. 183, Academic Press, Inc., San Diego, Calif.; Higgins, D. G. and Sharp, P. M. (1989) Fast and sensitive multiple sequence alignments on a microcomputer CABIOS 5:151-153; Myers, E. W. and Muller W. (1988) Optimal alignments in linear space CABIOS 4:11-17; Robinson, E. D. (1971) Comb. Theor 11:105; Santou, N. Nes, M. (1987) The neighbor joining method. A new method for reconstructing phylogenetic trees Mol. Biol. Evol. 4:406-425; Sneath, P. H. A. and Sokal, R. R. (1973) Numerical Taxonomy—the Principles and Practice of Numerical Taxonomy, Freeman Press, San Francisco, Calif.; Wilbur, W. J. and Lipman, D. J. (1983) Rapid similarity searches of nucleic acid and protein data banks Proc. Natl. Acad., Sci. USA 80:726-730.

[0035] Preferably, the “percentage of sequence identity” is determined by comparing two optimally aligned sequences over a window of comparison of at least 20 positions, wherein the portion of the polynucleotide sequence in the comparison window may comprise additions or deletions (i.e. gaps) of 20 percent or less, usually 5 to 15 percent, or 10 to 12 percent, as compared to the reference sequences (which does not comprise additions or deletions) for optimal alignment of the two sequences. The percentage is calculated by determining the number of positions at which the identical nucleic acid bases or amino acid residue occurs in both sequences to yield the number of matched positions, dividing the number of matched positions by the total number of positions in the reference sequence (i.e. the window size) and multiplying the results by 100 to yield the percentage of sequence identity.

[0036] In specific embodiments, the subject invention discloses polypeptides comprising at least an immunogenic portion of a B. microti antigen (or a variant of such an antigen), that comprises one or more of the amino acid sequences encoded by (a) a DNA sequence selected from the group consisting of SEQ ID NO: 1-17, 37, 40, 42, 45 50, 51 and 56-67, (b) the complements of such DNA sequences or (c) DNA sequences substantially homologous to a sequence in (a) or (b).

[0037] The B. microti antigens provided by the present invention include variants that are encoded by DNA sequences which are substantially homologous to one or more of the DNA sequences specifically recited herein. “Substantial homology,” as used herein, refers to DNA sequences that are capable of hybridizing under moderately stringent conditions. Suitable moderately stringent conditions include prewashing in a solution of 5× SSC, 0.5% SDS. 1.0 mM EDTA (pH 8.0); hybridizing at 50° C.-65° C., 5× SSC, overnight or, in the event of cross-species homology, at 45° C. with 0.5× SSC; followed by washing twice at 65° C. for 20 minutes with each of 2×, 0.5× and 0.2× SSC containing 0.1% SDS. Such hybridizing DNA sequences are also within the scope of this invention, as are nucleotide sequences that, due to code degeneracy, encode an immunogenic polypeptide that is encoded by a hybridizing DNA sequence.

[0038] In general, B. microti antigens, and DNA sequences encoding such antigens, may be prepared using any of a variety of procedures. For example, DNA molecules encoding B. microti antigens may be isolated from a B. microti genomic or cDNA expression library by screening with sera from B. microti-infected individuals as described below in Example 1, and sequenced using techniques well known to those of skill in the art. DNA molecules encoding B. microti antigens may also be isolated by screening an appropriate B. microti expression library with anti-sera (e.g., rabbit) raised specifically against B. microti antigens.

[0039] Antigens may be induced from such clones and evaluated for a desired property, such as the ability to react with sera obtained from a B. microti-infected individual as described herein. Alternatively, antigens may be produced recombinantly, as described below, by inserting a DNA sequence that encodes the antigen into an expression vector and expressing the antigen in an appropriate host. Antigens may be partially sequenced using, for example, traditional Edman chemistry. See Edman and Berg, Eur. J. Biochem. 80:116-132, 1967.

[0040] DNA sequences encoding antigens may also be obtained by screening an appropriate B. microti cDNA or genomic DNA library for DNA sequences that hybridize to degenerate oligonucleotides derived from partial amino acid sequences of isolated antigens. Degenerate oligonucleotide sequences for use in such a screen may be designed and synthesized, and the screen may be performed, as described (for example) in Sambrook et al., Molecular Cloning: A Laboratory Manual, Cold Spring Harbor Laboratories, Cold Spring Harbor, N.Y. (and references cited therein). Polymerase chain reaction (PCR) may also be employed, using the above oligonucleotides in methods well known in the art, to isolate a nucleic acid probe from a cDNA or genomic library. The library screen may then be performed using the isolated probe.

[0041] Synthetic polypeptides having fewer than about 100 amino acids, and generally fewer than about 50 amino acids, may be generated using techniques well known in the art. For example, such polypeptides may be synthesized using any of the commercially available solid-phase techniques, such as the Merrifield solid-phase synthesis method, where amino acids are sequentially added to a growing amino acid chain. See Merrifield, J. Am. Chem. Soc. 85:2149-2146, 1963. Equipment for automated synthesis of polypeptides is commercially available from suppliers such as Applied BioSystems, Inc., Foster City, Calif., and may be operated according to the manufacturer's instructions.

[0042] Immunogenic portions of B. microti antigens may be prepared and identified using well known techniques, such as those summarized in Paul, Fundamental Immunology, 3d ed., Raven Press, 1993, pp. 243-247 and references cited therein. Such techniques include screening polypeptide portions of the native antigen for immunogenic properties. The representative ELISAs described herein may generally be employed in these screens. An immunogenic portion of a polypeptide is a portion that, within such representative assays, generates a signal in such assays that is substantially similar to that generated by the full length antigen. In other words, an immunogenic portion of a B. microti antigen generates at least about 20%, and preferably about 100%, of the signal induced by the full length antigen in a model ELISA as described herein.

[0043] Portions and other variants of B. microti antigens may be generated by synthetic or recombinant means. Variants of a native antigen may generally be prepared using standard mutagenesis techniques, such as oligonucleotide-directed site-specific mutagenesis. Sections of the DNA sequence may also be removed using standard techniques to permit preparation of truncated polypeptides.

[0044] Recombinant polypeptides containing portions and/or variants of a native antigen may be readily prepared from a DNA sequence encoding the polypeptide using a variety of techniques well known to those of ordinary skill in the art. For example, supernatants from suitable host/vector systems which secrete recombinant protein into culture media may be first concentrated using a commercially available filter. Following concentration, the concentrate may be applied to a suitable purification matrix such as an affinity matrix or an ion exchange resin. Finally, one or more reverse phase HPLC steps can be employed to further purify a recombinant protein.

[0045] Any of a variety of expression vectors known to those of ordinary skill in the art may be employed to express recombinant polypeptides as described herein. Expression may be achieved in any appropriate host cell that has been transformed or transfected with an expression vector containing a DNA molecule that encodes a recombinant polypeptide. Suitable host cells include prokaryotes, yeast and higher eukaryotic cells. Preferably, the host cells employed are E. coli; yeast or a mammalian cell line, such as COS or CHO. The DNA sequences expressed in this manner may encode naturally occurring antigens, portions of naturally occurring antigens, or other variants thereof.

[0046] In another aspect, the present invention provides epitope repeat sequences, or antigenic epitopes, of a B. microti antigen, together with polypeptides comprising at least two such contiguous antigenic epitopes. As used herein an “epitope” is a portion of an antigen that reacts with sera from B. microti-infected individuals (i.e. an epitope is specifically bound by one or more antibodies present in such sera). As discussed above, epitopes of the antigens described in the present application may be generally identified using techniques well known to those of skill in the art.

[0047] In one embodiment, antigenic epitopes of the present invention comprise the amino acid sequence -X₁-X₂-X₃-X₄-X₅-Ser-(SEQ ID NO: 35), wherein X₁ is Glu or Gly, X₂ is Ala or Thr, X₃ is Gly or Val, X₄ is Trp or Gly, and X₅ is Pro or Ser. In another embodiment, the antigenic epitopes of the present invention comprise an amino acid sequence selected from the group consisting of SEQ ID NO: 36 and 39. As discussed in more detail below, antigenic epitopes provided herein may be employed in the diagnosis and treatment of B. microti infection, either alone or in combination with other B. microti antigens or antigenic epitopes. Antigenic epitopes and polypeptides comprising such epitopes may be prepared by synthetic means, as described generally above and in detail in Example 2.

[0048] In general, regardless of the method of preparation, the polypeptides and antigenic epitopes disclosed herein are prepared in substantially pure form. Preferably, the polypeptides and antigenic epitopes are at least about 80% pure, more preferably at least about 90% pure and most preferably at least about 99% pure.

[0049] In a further aspect, the present invention provides fusion proteins comprising either a first and a second inventive polypeptide, a first and a second inventive antigenic epitope or an inventive polypeptide and an antigenic epitope of the present invention, together with variants of such fusion proteins. The fusion proteins of the present invention may also include a linker peptide between the polypeptides or antigenic epitopes.

[0050] A DNA sequence encoding a fusion protein of the present invention is constructed using known recombinant DNA techniques to assemble separate DNA sequences encoding, for example, the first and second polypeptides into an appropriate expression vector. The 3′ end of a DNA sequence encoding the first polypeptide is ligated, with or without a peptide linker, to the 5′ end of a DNA sequence encoding the second polypeptide so that the reading frames of the sequences are in phase to permit mRNA translation of the two DNA sequences into a single fusion protein that retains the biological activity of both the first and the second polypeptides.

[0051] A peptide linker sequence may be employed to separate the first and the second polypeptides by a distance sufficient to ensure that each polypeptide folds into its secondary and tertiary structures. Such a peptide linker sequence is incorporated into the fusion protein using standard techniques well known in the art. Suitable peptide linker sequences may be chosen based on the following factors: (1) their ability to adopt a flexible extended conformation; (2) their inability to adopt a secondary structure that could interact with functional epitopes on the first and second polypeptides; and (3) the lack of hydrophobic or charged residues that might react with the polypeptide functional epitopes. Preferred peptide linker sequences contain Gly, Asn and Ser residues. Other near neutral amino acids, such as Thr and Ala may also be used in the linker sequence. Amino acid sequences which may be usefully employed as linkers include those disclosed in Maratea et al., Gene 40:39-46, 1985; Murphy et al., Proc. Natl. Acad. Sci. USA 83:8258-8562, 1986; U.S. Pat. No. 4,935,233 and U.S. Pat. No. 4,751,180. The linker sequence may be from 1 to about 50 amino acids in length. Peptide linker sequences are not required when the first and second polypeptides have non-essential N-terminal amino acid regions that can be used to separate the functional domains and prevent steric hindrance.

[0052] In another aspect, the present invention provides methods for using polypeptides comprising an immunogenic portion of a B. microti antigen and the antigenic epitopes described above to diagnose babesiosis. In this aspect, methods are provided for detecting B. microti infection in a biological sample, using one or more of the above polypeptides and antigenic epitopes, alone or in combination. For clarity, the term “polypeptide” will be used when describing specific embodiments of the inventive diagnostic methods. However, it will be clear to one of skill in the art that the antigenic epitopes of the present invention may also be employed in such methods.

[0053] As used herein, a “biological sample” is any antibody-containing sample obtained from a patient. Preferably, the sample is whole blood, sputum, serum, plasma, saliva, cerebrospinal fluid or urine. More preferably, the sample is a blood, serum or plasma sample obtained from a patient. The polypeptides are used in an assay, as described below, to determine the presence or absence of antibodies to the polypeptide(s) in the sample, relative to a predetermined cut-off value. The presence of such antibodies indicates previous sensitization to B. microti antigens which may be indicative of babesiosis.

[0054] In embodiments in which more than one polypeptide is employed, the polypeptides used are preferably complementary (i.e., one component polypeptide will tend to detect infection in samples where the infection would not be detected by another component polypeptide). Complementary polypeptides may generally be identified by using each polypeptide individually to evaluate serum samples obtained from a series of patients known to be infected with B. microti. After determining which samples test positive (as described below) with each polypeptide, combinations of two or more polypeptides may be formulated that are capable of detecting infection in most, or all, of the samples tested.

[0055] A variety of assay formats are known to those of ordinary skill in the art for using one or more polypeptides to detect antibodies in a sample. See, e.g., Harlow and Lane, Antibodies: A Laboratory Manual, Cold Spring Harbor Laboratory, 1988, which is incorporated herein by reference. In a preferred embodiment, the assay involves the use of polypeptide immobilized on a solid support to bind to and remove the antibody from the sample. The bound antibody may then be detected using a detection reagent that contains a reporter group. Suitable detection reagents include antibodies that bind to the antibody/polypeptide complex and free polypeptide labeled with a reporter group (e.g., in a semi-competitive assay). Alternatively, a competitive assay may be utilized, in which an antibody that binds to the polypeptide is labeled with a reporter group and allowed to bind to the immobilized antigen after incubation of the antigen with the sample. The extent to which components of the sample inhibit the binding of the labeled antibody to the polypeptide is indicative of the reactivity of the sample with the immobilized polypeptide.

[0056] The solid support may be any solid material known to those of ordinary skill in the art to which the antigen may be attached. For example, the solid support may be a test well in a microtiter plate, or a nitrocellulose or other suitable membrane. Alternatively, the support may be a bead or disc, such as glass, fiberglass, latex or a plastic material such as polystyrene or polyvinylchloride. The support may also be a magnetic particle or a fiber optic sensor, such as those disclosed, for example, in U.S. Pat. No. 5,359,681.

[0057] The polypeptides may be bound to the solid support using a variety of techniques known to those of ordinary skill in the art. In the context of the present invention, the term “bound” refers to both noncovalent association, such as adsorption, and covalent attachment (which may be a direct linkage between the antigen and functional groups on the support or may be a linkage by way of a cross-linking agent). Binding by adsorption to a well in a microtiter plate or to a membrane is preferred. In such cases, adsorption may be achieved by contacting the polypeptide, in a suitable buffer, with the solid support for a suitable amount of time. The contact time varies with temperature, but is typically between about 1 hour and 1 day. In general, contacting a well of a plastic microtiter plate (such as polystyrene or polyvinylchloride) with an amount of polypeptide ranging from about 10 ng to about 1 μg, and preferably about 100 ng, is sufficient to bind an adequate amount of antigen.

[0058] Covalent attachment of polypeptide to a solid support may generally be achieved by first reacting the support with a bifunctional reagent that will react with both the support and a functional group, such as a hydroxyl or amino group, on the polypeptide. For example, the polypeptide may be bound to supports having an appropriate polymer coating using benzoquinone or by condensation of an aldehyde group on the support with an amine and an active hydrogen on the polypeptide (see, e.g., Pierce Immunotechnology Catalog and Handbook, 1991, at A12-A13).

[0059] In certain embodiments, the assay is an enzyme linked immunosorbent assay (ELISA). This assay may be performed by first contacting a polypeptide antigen that has been immobilized on a solid support, commonly the well of a microtiter plate, with the sample, such that antibodies to the polypeptide within the sample are allowed to bind to the immobilized polypeptide. Unbound sample is then removed from the immobilized polypeptide and a detection reagent capable of binding to the immobilized antibody-polypeptide complex is added. The amount of detection reagent that remains bound to the solid support is then determined using a method appropriate for the specific detection reagent.

[0060] More specifically, once the polypeptide is immobilized on the support as described above, the remaining protein binding sites on the support are typically blocked. Any suitable blocking agent known to those of ordinary skill in the art, such as bovine serum albumin (BSA) or Tween 20™ (Sigma Chemical Co., St. Louis, Mo.) may be employed. The immobilized polypeptide is then incubated with the sample, and antibody is allowed to bind to the antigen. The sample may be diluted with a suitable diluent, such as phosphate-buffered saline (PBS) prior to incubation. In general, an appropriate contact time (i.e., incubation time) is that period of time that is sufficient to detect the presence of antibody within a B. microti-infected sample. Preferably, the contact time is sufficient to achieve a level of binding that is at least 95% of that achieved at equilibrium between bound and unbound antibody. Those of ordinary skill in the art will recognize that the time necessary to achieve equilibrium may be readily determined by assaying the level of binding that occurs over a period of time. At room temperature, an incubation time of about 30 minutes is generally sufficient.

[0061] Unbound sample may then be removed by washing the solid support with an appropriate buffer, such as PBS containing 0.1% Tween 20™. Detection reagent may then be added to the solid support. An appropriate detection reagent is any compound that binds to the immobilized antibody-polypeptide complex and that can be detected by any of a variety of means known to those in the art. Preferably, the detection reagent contains a binding agent (such as, for example, Protein A, Protein G, immunoglobulin, lectin or free antigen) conjugated to a reporter group. Preferred reporter groups include enzymes (such as horseradish peroxidase), substrates, cofactors, inhibitors, dyes, radionuclides, luminescent groups, fluorescent groups and biotin. The conjugation of binding agent to reporter group may be achieved using standard methods known to those of ordinary skill in the art. Common binding agents may also be purchased conjugated to a variety of reporter groups from many commercial sources (e.g., Zymed Laboratories, San Francisco, Calif., and Pierce, Rockford, Ill.).

[0062] The detection reagent is then incubated with the immobilized antibody-polypeptide complex for an amount of time sufficient to detect the bound antibody. An appropriate amount of time may generally be determined from the manufacturer's instructions or by assaying the level of binding that occurs over a period of time. Unbound detection reagent is then removed and bound detection reagent is detected using the reporter group. The method employed for detecting the reporter group depends upon the nature of the reporter group. For radioactive groups, scintillation counting or autoradiographic methods are generally appropriate. Spectroscopic methods may be used to detect dyes. luminescent groups and fluorescent groups. Biotin may be detected using avidin, coupled to a different reporter group (commonly a radioactive or fluorescent group or an enzyme). Enzyme reporter groups may generally be detected by the addition of substrate (generally for a specific period of time), followed by spectroscopic or other analysis of the reaction products.

[0063] To determine the presence or absence of anti-B. microti antibodies in the sample, the signal detected from the reporter group that remains bound to the solid support is generally compared to a signal that corresponds to a predetermined cut-off value. In one preferred embodiment, the cut-off value is the average mean signal obtained when the immobilized antigen is incubated with samples from an uninfected patient. In general, a sample generating a signal that is three standard deviations above the predetermined cut-off value is considered positive for babesiosis. In an alternate preferred embodiment, the cut-off value is determined using a Receiver Operator Curve, according to the method of Sackett et al., Clinical Epidemiology: A Basic Science for Clinical Medicine, Little Brown and Co., 1985, pp. 106-107. Briefly, in this embodiment, the cut-off value may be determined from a plot of pairs of true positive rates (i.e., sensitivity) and false positive rates (100%-specificity) that correspond to each possible cut-off value for the diagnostic test result. The cut-off value on the plot that is the closest to the upper left-hand corner (i.e., the value that encloses the largest area) is the most accurate cut-off value, and a sample generating a signal that is higher than the cut-off value determined by this method may be considered positive. Alternatively, the cut-off value may be shifted to the left along the plot, to minimize the false positive rate, or to the right, to minimize the false negative rate. In general, a sample generating a signal that is higher than the cut-off value determined by this method is considered positive for babesiosis.

[0064] In a related embodiment, the assay is performed in a rapid flow-through or strip test format, wherein the antigen is immobilized on a membrane, such as nitrocellulose. In the flow-through test, antibodies within the sample bind to the immobilized polypeptide as the sample passes through the membrane. A detection reagent (e.g., protein A-colloidal gold) then binds to the antibody-polypeptide complex as the solution containing the detection reagent flows through the membrane. The detection of bound detection reagent may then be performed as described above. In the strip test format, one end of the membrane to which polypeptide is bound is immersed in a solution containing the sample. The sample migrates along the membrane through a region containing detection reagent and to the area of immobilized polypeptide. Concentration of detection reagent at the polypeptide indicates the presence of anti-B. microti antibodies in the sample. Typically, the concentration of detection reagent at that site generates a pattern, such as a line, that can be read visually. The absence of such a pattern indicates a negative result. In general, the amount of polypeptide immobilized on the membrane is selected to generate a visually discernible pattern when-the biological sample contains a level of antibodies that would be sufficient to generate a positive signal in an ELISA, as discussed above. Preferably, the amount of polypeptide immobilized on the membrane ranges from about 25 ng to about 1 μg, and more preferably from about 50 ng to about 500 ng. Such tests can typically be performed with a very small amount (e.g., one drop) of patient serum or blood.

[0065] Of course, numerous other assay protocols exist that are suitable for use with the polypeptides and antigenic epitopes of the present invention. The above descriptions are intended to be exemplary only.

[0066] In yet another aspect, the present invention provides antibodies to the polypeptides and antigenic epitopes of the present invention. Antibodies may be prepared by any of a variety of techniques known to those of ordinary skill in the art. See, e.g., Harlow and Lane, Antibodies: A Laboratory Manual, Cold Spring Harbor Laboratory, Cold Spring Harbor, N.Y., 1988. In one such technique, an immunogen comprising the antigenic polypeptide or epitope is initially injected into any of a wide variety of mammals (e.g., mice, rats, rabbits, sheep and goats). The polypeptides and antigenic epitopes of this invention may serve as the immunogen without modification. Alternatively, particularly for relatively short polypeptides, a superior immune response may be elicited if the polypeptide is joined to a carrier protein, such as bovine serum albumin or keyhole limpet hemocyanin. The immunogen is injected into the animal host, preferably according to a predetermined schedule incorporating one or more booster immunizations, and the animals are bled periodically. Polyclonal antibodies specific for the polypeptide or antigenic epitope may then be purified from such antisera by, for example, affinity chromatography using the polypeptide or antigenic epitope coupled to a suitable solid support.

[0067] Monoclonal antibodies specific for the antigenic polypeptide or epitope of interest may be prepared, for example, using the technique of Kohler and Milstein, Eur. J. Immunol. 6:511-519, 1976, and improvements thereto. Briefly, these methods involve the preparation of immortal cell lines capable of producing antibodies having the desired specificity (i.e., reactivity with the polypeptide or antigenic epitope of interest). Such cell lines may be produced, for example, from spleen cells obtained from an animal immunized as described above. The spleen cells are then immortalized by, for example, fusion with a myeloma cell fusion partner, preferably one that is syngeneic with the immunized animal. A variety of fusion techniques may be employed. For example, the spleen cells and myeloma cells may be combined with a nonionic detergent for a few minutes and then plated at low density on a selective medium that supports the growth of hybrid cells, but not myeloma cells. A preferred selection technique uses HAT (hypoxanthine, aminopterin, thymidine) selection. After a sufficient time, usually about 1 to 2 weeks, colonies of hybrids are observed. Single colonies are selected and tested for binding activity against the polypeptide or antigenic epitope. Hybridomas having high reactivity and specificity are preferred.

[0068] Monoclonal antibodies may be isolated from the supernatants of growing hybridoma colonies. In addition, various techniques may be employed to enhance the yield, such as injection of the hybridoma cell line into the peritoneal cavity of a suitable vertebrate host, such as a mouse. Monoclonal antibodies may then be harvested from the ascites fluid or the blood. Contaminants may be removed from the antibodies by conventional techniques, such as chromatography, gel filtration, precipitation, and extraction. The polypeptides or antigenic epitopes of this invention may be used in the purification process in, for example, an affinity chromatography step.

[0069] Antibodies may be used in diagnostic tests to detect the presence of B. microti antigens using assays similar to those detailed above and other techniques well known to those of skill in the art, thereby providing a method for detecting B. microti infection in a patient.

[0070] Diagnostic reagents of the present invention may also comprise DNA sequences encoding one or more of the above polypeptides, or one or more portions thereof. For example, at least two oligonucleotide primers may be employed in a polymerase chain reaction (PCR) based assay to amplify B. microti-specific cDNA derived from a biological sample, wherein at least one of the oligonucleotide primers is specific for a DNA molecule encoding a polypeptide of the present invention. The presence of the amplified cDNA is then detected using techniques well known in the art, such as gel electrophoresis. Similarly, oligonucleotide probes specific for a DNA molecule encoding a polypeptide of the present invention may be used in a hybridization assay to detect the presence of an inventive polypeptide in a biological sample.

[0071] As used herein, the term “oligonucleotide primer/probe specific for a DNA molecule” means an oligonucleotide sequence that has at least about 80%, preferably at least about 90% and more preferably at least about 95%, identity to the DNA molecule in question. Oligonucleotide primers and/or probes which may be usefully employed in the inventive diagnostic methods preferably have at least about 10-40 nucleotides. In a preferred embodiment, the oligonucleotide primers comprise at least about 10 contiguous nucleotides of a DNA molecule encoding one of the polypeptides disclosed herein. Preferably, oligonucleotide probes for use in the inventive diagnostic methods comprise at least about 15 contiguous oligonucleotides of a DNA molecule encoding one of the polypeptides disclosed herein. Techniques for both PCR based assays and hybridization assays are well known in the art (see, for example, Mullis et al. Ibid; Ehrlich, Ibid). Primers or probes may thus be used to detect B. microti-specific sequences in biological samples, preferably sputum, blood, serum, saliva, cerebrospinal fluid or urine. DNA probes or primers comprising oligonucleotide sequences described above may be used alone or in combination with each other.

[0072] In another aspect, the present invention provides methods for using one or more of the above polypeptides, antigenic epitopes or fusion proteins (or DNA molecules encoding such polypeptides) to induce protective immunity against B. microti infection in a patient. As used herein, a “patient” refers to any warm-blooded animal, preferably a human. A patient may be afflicted with a disease, or may be free of detectable disease and/or infection. In other words, protective immunity may be induced to prevent or treat babesiosis.

[0073] In this aspect, the polypeptide, antigenic epitope, fusion protein or DNA molecule is generally present within a pharmaceutical composition or a vaccine. Pharmaceutical compositions may comprise one or more polypeptides, each of which may contain one or more of the above sequences (or variants thereof), and a physiologically acceptable carrier. Vaccines may comprise one or more of the above polypeptides and a non-specific immune response enhancer, such as an adjuvant or a liposome (into which the polypeptide is incorporated). Such pharmaceutical compositions and vaccines may also contain other B. microti antigens, either incorporated into a combination polypeptide or present within a separate polypeptide.

[0074] Alternatively, a vaccine may contain DNA encoding one or more polypeptides, antigenic epitopes or fusion proteins as described above, such that the polypeptide is generated in situ. In such vaccines, the DNA may be present within any of a variety of delivery systems known to those of ordinary skill in the art, including nucleic acid expression systems, bacterial and viral expression systems. Appropriate nucleic acid expression systems contain the necessary DNA sequences for expression in the patient (such as a suitable promoter and terminating signal). Bacterial delivery systems involve the administration of a bacterium (such as Bacillus-Calmette-Guerrin) that expresses an immunogenic portion of the polypeptide on its cell surface. In a preferred embodiment, the DNA may be introduced using a viral expression system (e.g., vaccinia or other pox virus, retrovirus, or adenovirus), which may involve the use of a non-pathogenic (defective), replication competent virus. Techniques for incorporating DNA into such expression systems are well known to those of ordinary skill in the art. The DNA may also be “naked,” as described, for example, in Ulmer et al., Science 259:1745-1749, 1993 and reviewed by Cohen, Science 259:1691-1692, 1993. The uptake of naked DNA may be increased by coating the DNA onto biodegradable beads, which are efficiently transported into the cells.

[0075] In a related aspect, a DNA vaccine as described above may be administered simultaneously with or sequentially to either a polypeptide of the present invention or a known B. microti antigen. For example, administration of DNA encoding a polypeptide of the present invention, either “naked” or in a delivery system as described above, may be followed by administration of an antigen in order to enhance the protective immune effect of the vaccine.

[0076] Routes and frequency of administration, as well as dosage, will vary from individual to individual. In general, the pharmaceutical compositions and vaccines may be administered by injection (e.g., intracutaneous, intramuscular, intravenous or subcutaneous), intranasally (e.g., by aspiration) or orally. Between 1 and 3 doses may be administered for a 1-36 week period. Preferably, 3 doses are administered, at intervals of 3-4 months, and booster vaccinations may be given periodically thereafter. Alternate protocols may be appropriate for individual patients. A suitable dose is an amount of polypeptide or DNA that, when administered as described above, is capable of raising an immune response in an immunized patient sufficient to protect the patient from B. microti infection for at least 1-2 years. In general, the amount of polypeptide present in a dose (or produced in situ by the DNA in a dose) ranges from about 1 pg to about 100 mg per kg of host, typically from about 10 pg to about 1 mg, and preferably from about 100 pg to about 1 μg. Suitable dose sizes will vary with the size of the patient, but will typically range from about 0.1 mL to about 5 mL.

[0077] While any suitable carrier known to those of ordinary skill in the art may be employed in the pharmaceutical compositions of this invention, the type of carrier will vary depending on the mode of administration. For parenteral administration, such as subcutaneous injection, the carrier preferably comprises water, saline, alcohol, a fat, a wax or a buffer. For oral administration, any of the above carriers or a solid carrier, such as mannitol, lactose, starch, magnesium stearate, sodium saccharine, talcum, cellulose, glucose, sucrose, and magnesium carbonate, may be employed. Biodegradable microspheres (e.g., polylactic galactide) may also be employed as carriers for the pharmaceutical compositions of this invention. Suitable biodegradable microspheres are disclosed, for example, in U.S. Pat. Nos. 4,897,268 and 5,075,109.

[0078] Any of a variety of adjuvants may be employed in the vaccines of this invention to nonspecifically enhance the immune response. Most adjuvants contain a substance designed to protect the antigen from rapid catabolism, such as aluminum hydroxide or mineral oil, and a nonspecific stimulator of immune responses, such as lipid A, Bortadella pertussis or Mycobacterium tuberculosis. Suitable adjuvants are commercially available as, for example, Freund's Incomplete Adjuvant and Freund's Complete Adjuvant (Difco Laboratories, Detroit, Mich.) and Merck Adjuvant 65 (Merck and Company, Inc., Rahway, N.J.). Other suitable adjuvants include alum, biodegradable microspheres, monophosphoryl lipid A and quil A.

[0079] The following Examples are offered by way of illustration and not by way of limitation.

EXAMPLE 1 Isolation of DNA Sequences Encoding B. microti Antigens

[0080] This example illustrates the preparation of DNA sequences encoding B. microti antigens by screening a B. microti expression library with sera obtained from patients infected with B. microti.

[0081]B. microti genomic DNA was isolated from infected hamsters and sheared by sonication. The resulting randomly sheared DNA was used to construct a B. microti genomic expression library (approximately 0.5-4.0 kbp inserts) with EcoRI adaptors and a Lambda ZAP II/EcoRI/CIAP vector (Stratagene, La Jolla, Calif.). The unamplified library (1.2×10⁶/ml) was screened with an E. coli lysate-absorbed B. microti patient serum pool, as described in Sambrook et al., Molecular Cloning: A Laboratory Manual, Cold Spring Harbor Laboratories, Cold Spring Harbor, N.Y., 1989. Positive plaques were visualized and purified with goat-anti-human alkaline phosphatase. Phagemid from the plaques was rescued and DNA sequence for positive clones was obtained using forward, reverse, and specific internal primers on a Perkin Elmer/Applied Biosystems Inc. Automated Sequencer Model 373A (Foster City, Calif.).

[0082] Seventeen antigens (hereinafter referred to as BMNI-1-BMNI-17) were purified and three were possibly redundant. The determined DNA sequences for BMNI-1-BMNI-17 are shown in SEQ ID NO: 1-17, respectively. The deduced amino acid sequences for BMNI-1-BMNI-6, BMNI-8 and BMNI-10-BMNI-17 are shown in SEQ ID NO: 18-32, respectively, with the predicted 5′ and 3′ protein sequences for BMNI-9 being shown in SEQ ID NO: 33 and 34, respectively.

[0083] The isolated DNA sequences were compared to known sequences in the gene bank using the DNA STAR system. Nine of the seventeen antigens (BMNI-1, BMNI-2, BMNI-3, BMNI-5, BMNI-6, BMNI-7, BMNI-12, BMNI-13 and BMNI-16) share some homology, with BMNI-1 and BMNI-16 being partial clones of BMNI-3. All of these nine antigens contain a degenerate repeat of six amino acids (SEQ ID NO: 35), with between nine to twenty-two repeats occurring in each antigen. The repeat portion of the sequences was found to bear some similarity to a Plasmodium falciparum merozoite surface antigen (MSA-2 gene). FIG. 1 shows the genomic sequence of BMNI-3 including a translation of the putative open reading frame, with the internal six amino acid repeat sequence being indicated by vertical lines within the open reading frame.

[0084] A second group of five antigens bear some homology to each other but do not show homology to any previously identified sequences (BMNI-4, BMNI-8, BMNI-9, BMNI-10 and BMNI-11). These antigens may belong to a family of genes or may represent parts of a repetitive sequence. BMNI-17 contains a novel degenerate repeat of 32 amino acids (SEQ ID NO: 36). Similarly, the reverse complement of BMNI-17 (SEQ ID NO: 37) contains an open reading frame that encodes an amino acid sequence (SEQ ID NO: 38) having a degenerate 32 amino acid repeat (SEQ ID NO: 39).

[0085] The reverse complement of BMNI-3 (SEQ ID NO: 40) has an open reading frame which shows homology with the BMNI-4-like genes. The predicted amino acid sequence encoded by this open reading frame is shown in SEQ ID NO: 41. The reverse complement of BMNI-5 (SEQ ID NO: 42) contains a partial copy of a BMNI-3-like sequence and also an open reading frame with some homology to two yeast genes (S. cerevisiae G9365 ORF gene, and S. cerevisiae accession no. U18922). The predicted 5′ and 3′ amino acid sequences encoded by this open reading frame are shown in SEQ ID NO: 43 and 44, respectively. The reverse complement of BMNI-7 (SEQ ID NO: 45) contains an open reading frame encoding the amino acid sequence shown in SEQ ID NO: 46.

[0086] A telomeric repeat sequence, which is conserved over a wide range of organisms, was found in five antigens (BMNI-2, BMNI-5, BMNI-6, BMNI-7 and BMNI-16), indicating that many of the isolated genes may have a telomere-proximal location in the genome. BMNI-10 appears to include a double insert, the 3′-most segment having some homology to E. coli aminopeptidase N. In addition, BMNI-7 contains apparently random insertions of hamster DNA. One such insertion has characteristics of a transposible element (i.e. poly A tail and flanked by a direct repeat).

[0087] In subsequent studies, two additional B. microti antigens were isolated by screening the B. microti genomic DNA expression library described above with a serum pool from B. microti infected patients that showed low reactivity with recombinant proteins generated from clones BMNI-2-BMNI-17. The determined DNA sequences for these two clones, hereinafter referred to as MN-10 and BMNI-20, are provided in SEQ ID NO: 50 and 51, respectively, with the corresponding predicted amino acid sequences being provided in SEQ ID NO: 52 and 53. MN-10 was found to extend the sequence of BMNI-4 in the 3′ direction and BMNI-20 was found to extend the sequence of BMNI-17 in the 5′ direction.

EXAMPLE 2 Synthesis of Synthetic Polypeptides

[0088] Polypeptides may be synthesized on a Millipore 9050 peptide synthesizer using FMOC chemistry with HPTU (O-Benzotriazole-N,N,N′,N′-tetramethyluronium hexafluorophosphate) activation. A Gly-Cys-Gly sequence may be attached to the amino terminus of the peptide to provide a method of conjugating or labeling of the peptide. Cleavage of the peptides from the solid support may be carried out using the following cleavage mixture: trifluoroacetic acid:ethanedithiol:thioanisole:water:phenol (40:1:2:2:3). After cleaving for 2 hours, the peptides may be precipitated in cold methyl-t-butyl-ether. The peptide pellets may then be dissolved in water containing 0.1% trifluoroacetic acid (TFA) and lyophilized prior to purification by C18 reverse phase HPLC. A gradient of 0-60% acetonitrile (containing 0.1% TFA) in water (containing 0.1% TFA) may be used to elute the peptides. Following lyophilization of the pure fractions, the peptides may be characterized using electrospray mass spectrometry and by amino acid analysis.

[0089] This procedure was used to synthesize two peptides (hereinafter referred to as BABS-1 and BABS-4) made to the repeat region of the isolated B. microti antigen BMNI-3. The sequences of BABS-1 and BABS-4 are shown in SEQ ID NO: 47 and 48, respectively.

EXAMPLE 3 Use of Representative Antigens and Peptides for Serodiagnosis of B. microti Infection

[0090] A. Diagnostic Properties of Representative Antigens and Peptides as Determined by ELISA

[0091] The diagnostic properties of recombinant BMNI-3, BMNI-4, BMNI-6, BMNI-15, MN-10 and BMNI-20, and the BABS-1 and BABS-4 peptides were determined as follows.

[0092] Assays were performed in 96 well plates coated overnight at 4° C. with 200 ng antigen/well added in 50 μl of carbonate coating buffer. The plate contents were then removed and the wells were blocked for 2 hours with 200 μl of PBS/1% BSA. After the blocking step, the wells were washed six times with PBS/0.1% Tween 20™. Fifty microliters of sera, diluted 1:100 in PBS/0.1% Tween 20™/0.1% BSA, was then added to each well and incubated for 30 minutes at room temperature. The plates were then washed six times with PBS/0.1% Tween 20™.

[0093] The enzyme conjugate (horseradish peroxidase-Protein A, Zymed, San Francisco, Calif.) was then diluted 1:20,000 in PBS/0.1% Tween 20™/0.1% BSA, and 50 μl of the diluted conjugate was added to each well and incubated for 30 minutes at room temperature. Following incubation, the wells were washed six times with PBS/0.1% Tween 20™. 100 μl of tetramethylbenzidine peroxidase substrate (Kirkegaard and Perry Laboratories, Gaithersburg, Md.) was added, undiluted, and incubated for 15 minutes. The reaction was stopped by the addition of 100 μl of 1N H₂SO₄ to each well and the plates were read at 450 nm.

[0094]FIG. 2a shows the reactivity of the recombinant BMNI-3 and BMNI-6 antigens and the two peptides BABS-1 and BABS-4 in the ELISA assay. The recombinant antigens and the two peptides were negative in ELISA with all seven samples from normal (B. microti negative) individuals. In contrast, both BMNI-3 and BMNI-6 detected six of the nine B. microti-infected samples, as compared to two out of the nine for the BABS-1 and BABS-4 peptides. This would suggest that BMNI-3 and BMNI-6 may contain other antigenic epitopes in addition to those present in the repeat epitopes in BABS-1 and BABS-4, or that an insufficient number of repeats are available in the peptides to fully express the antigenic epitopes present in the recombinant antigens BMNI-3 and BMNI-6.

[0095]FIG. 2b shows the ELISA reactivity of the recombinant antigens BMNI-4 and BMNI-15. Both recombinants were negative with all fifteen samples from normal individuals. BMNI-4 detected four out of nine B. microti-infected samples and BMNI-15 detected six out of nine B. microti-infected samples. Both BMNI-4 and BMNI-15 detected a B. microti-infected sample which was not detected by BMNI-3 or BMNI-6, suggesting that BMNI-4 and BMNI-15 might be complementary to BMNI-3 and BMNI-6 in the ELISA test described herein.

[0096] The ELISA reactivity of recombinant MN-10 and BMNI-20 with sera from B. microti-infected patients and from normal donors is shown in FIG. 3. MN-10 and BMNI-20 were found to be reactive with B. microti-infected sera that were not reactive with recombinant BMNI-2 through BMNI-17. Therefore, MN-10 and BMNI-20 may be usefully employed in combination with other B. microti antigens of the present invention for the detection of B. microti infection.

[0097] Table 1 shows the reactivity of the recombinant B. microti antigens BMNI-2, BMNI-17, MN-10 and a combination of BMNI-17 and MN-10, as determined by ELISA, with Babesia-positive sera, sera positive for both Babesia and Ehrlichia, sera positive only for Ehrlichia, Lyme disease sera and sera from normal donors. The data indicate a sensitivity of approximately 93% and a specificity in normal donors in excess of 98%. These results indicate that a combination of BMNI-17 and MN-10 is particularly effective in the diagnosis of B. microti infection. TABLE 1 Normal Antigen Babesia Babesia/Ehrlichia Ehrlichia Lyme donors BMNI-2 27/50 2/3 1/4 0/10 1/73 BMNI-17 35/50 3/3 0/4 0/10 0/86 MN-10 37/49 3/3 0/4 1/10 1/98 BMNI-17/ 46/50 3/3 0/4 1/10 1/98 MN-10

[0098] B. Diagnostic Properties of Representative Antigens and Peptides as Determined by Western Analysis

[0099] Western blot analyses were performed on representative B. microti antigens as follows.

[0100] Antigens were induced as pBluescript SK-constructs (Stratagene), with 2 mM IPTG for three hours (T3), after which the resulting proteins from time 0 (T0) and T3 were separated by SDS-PAGE on 15% gels. Separated proteins were then transferred to nitrocellulose and blocked for 1 hr in 0.1% Tween 2™/PBS. Blots were then washed 3 times in 0.1% Tween 2™/PBS and incubated with a B. microti patient serum pool (1:200) for a period of 2 hours. After washing blots in 0.1% Tween 20™/PBS 3 times, immunocomplexes were detected by the addition of Protein A conjugated to ¹²⁵I (1/25000; NEN-Dupont, Billerica, Mass.) followed by exposure to X-ray film (Kodak XAR 5; Eastman Kodak Co., Rochester, N.Y.) at −70° C. for 1 day.

[0101] As shown in FIG. 4, resulting bands of reactivity with serum antibody were seen at 43 kDa for BMNI-1, 38 kDa for BMNI-2, 45 kDa for BMNI-3, 37 kDa for BMNI-4, 18 and 20 kDa for BMNI-5, 35 and 43 kDa for BMNI-7, 32 kDa for BMNI-9, 38 kDa for BMNI-11, 30 kDa for BMNI-12, 45 kDa for BMNI-15, and 43 kDa for BMNI-17 (not shown). Antigen BMNI-6, after reengineering as a pET 17b construct (Novagen, Madison, Wis.) showed a band of reactivity at 33 kDa (data not shown). Protein size standards, in kDa (Gibco BRL, Gaithersburg, MB), are shown to the left of the blots.

[0102] Western blots were performed on purified BMNI-3, BMNI-2, BMNI-15, BMNI-17 and MN-10 recombinant antigen with a series of patient sera from B. microti patients and from patients with either Lyme disease or ehrlichiosis. Specifically, purified recombinant antigen (4 μg) was separated by SDS-PAGE on 12% gels. Protein was then transferred to nitrocellulose membrane for immunoblot analysis. The membrane was first blocked with PBS containing 1% Tween 20™ for 2 hours. Membranes were then cut into strips and incubated with individual sera (1/500) for two hours. The strips were washed 3 times in PBS/0.1% Tween 20™ containing 0.5 M NaCl prior to incubating with Protein A-horseradish peroxidase conjugate (1/20,000) in PBS/0.1% Tween 20™/0.5 M NaCl for 45 minutes. After further washing three times in PBS/0.1% Tween 20™/0.5 M NaCl, ECL chemiluminescent substrate (Amersham, Arlington Heights, Ill.) was added for 1 min. Strips were then reassembled and exposed to Hyperfilm ECL (Amersham) for 5-30 seconds.

[0103] Lanes 1-9 of FIG. 5 show the reactivity of purified recombinant BMNI-3 with sera from nine B. microti-infected patients, of which five were clearly positive and a further two were low positives detectable at higher exposure to the hyperfilm ECL. This correlates with the reactivity as determined by ELISA. In contrast, no immunoreactivity was seen with sera from patients with either ehrlichiosis (lanes 10 and 11) or Lyme disease (lanes 12-14), or with sera from normal individuals (lanes 15-20). A major reactive band appeared at 45 kDa and a small break down band was seen at approximately 25 kDa.

[0104] Table 2, below, summarizes the reactivity of the recombinant antigens BMNI-2, BMNI-15, BMNI-17 and MN-10 with B. microti positive sera. No reactivity was seen with Lyme or Ehrlichia-infected sera, with little or no reactivity being seen with normal sera. TABLE 2 Sample ID BMNI-2 BMNI-15 BMNI-17 MN-10 BM8 ++ ++ +++++ − BM21 ++ − ++++ ++++ COR4 ± ++++ ++++ + COR5 ± +++ + − 252 ++++ ++++ ++++++ +++

[0105] − indicates no reactivity

EXAMPLE 4 Analysis of Geographic Variation within Antigens

[0106] The reactivity of the inventive antigens with sera from B. microti patients, as determined by Western blot, was found to vary with the U.S. location of the patients. Accordingly, geographic variation within the gene encoding the exemplary antigen BMNI-6 was examined as follows.

[0107] Two PCR primers, referred to as BMNI-6/5′ and BMNI-6/3′ (SEQ ID NOS: 54 and 55, respectively) were designed based on the region flanking the six amino acid degenerate repeat region of BMNI-6 (SEQ ID NO: 6). These primers were employed to amplify genomic DNA from whole blood obtained from twelve B. microti-infected patients and genomic DNA from whole blood from P. leucopus and hamsters in a Perkin Elmer 480 thermal cycler using the manufacturer's protocol. PCR products were evaluated for size on 2% agarose gels and then Southern blotted and probed with a DIG-labeled oligonucleotide. Positive clones were sequenced using an Applied Biosystems Model 373A or 377 sequencer. RT-PCR was performed on Trizol LS extracted B microti-infected hamster whole blood RNA using the primers described above, and the resulting clones were sequenced as described above.

[0108] These studies resulted in the isolation of twelve BMNI-6 homologues, referred to hereinafter as BI1254, BI1053, BI2227, BI2259, BI2253, BI2018, RIFS, MN1HAM, MN2, MN1PAT, MN3 and MRT with MN1HAM being obtained from hamster and the other eleven from patients. The determined DNA sequences of these clones are provided in SEQ ID NO: 56-67, respectively, with the corresponding predicted amino acid sequences being provided in SEQ ID NO: 68-79, respectively. Isolates from hamsters had the same sequences as found in the corresponding human blood, suggesting that genetic variation of BMNI-6 does not occur during passage. However, clones from different patients often showed variation in the number and location of the degenerate repeat found within BMNI-6. An alignment of the repeat regions from each of the twelve clones is provided in FIG. 6. Furthermore, strains that were closely related geographically were also closely related at the sequence level. For example, three patients from Nantucket Island, Mass., harbored clones (BI2253, BI2259 and BI2227) that were indistinguishable from each other but distinct from those found in other northeastern or upper Midwestern strains. These results suggest that considerable antigenic diversity exists among isolates of B. microti from the U.S. and that geographic clustering of subtypes exists.

EXAMPLE 5 Preparation and Characterization of B. microti Fusion Proteins

[0109] A fusion protein containing the B. microti antigens MN-10 and BMNI-17, referred to as BaF-3, was prepared as follows.

[0110] MN-10 and BMNI-17 DNA was used to perform PCR using the primers PDM-285 and PDM-286 (SEQ ID NO: 80 and 81); and PDM-283 and PDM-284 (SEQ ID NO: 82 and 83), respectively. In both cases, the DNA amplification was performed using 10 μl of 10× Pfu buffer (Stratagene), 1 μl of 10 mM dNTPs, 2 μl each of the PCR primers at 10 μM concentration, 83 μwater, 1.5 μl Pfu DNA polymerase (Stratagene, La Jolla, Calif.) and 1 μl DNA at 50 ng/μl. Denaturation at 96° C. was performed for 2 min, followed by 40 cycles of 96° C. for 20 sec, 60° C. for 15 sec and 72° C. for 3 min, and lastly by 72° C. for 4 min. The MN-10 and BMNI-17 PCR products were digested with SspI and then ligated using a ligation kit from Panvera (Madison, Wis.). The resulting BaF-3 fusion was PCR amplified using primers PDM 285 and PDM-284 and the same conditions as listed above. This PCR product was then digested with ScaI and EcoRI, and cloned into a modified pET28 vector. The fusion construct was confirmed by sequencing. The expression construct was transformed into BL21 pLys S E. coli (Novagen, Madison, Wis.) for induction and expression.

[0111] One of skill in the art will appreciate that the order of the individual antigens within the fusion protein may be changed and that comparable or enhanced activity could be expected provided each of the epitopes is still functionally available. In addition, truncated forms of the proteins containing active epitopes may be used in the construction of fusion proteins.

[0112] Although the present invention has been described in some detail by way of illustration and example for purposes of clarity of understanding, changes and modifications can be carried out without departing from the scope of the invention which is intended to be limited only by the scope of the appended claims.

1 83 1 792 DNA Babesia microti 1 cactcttttt aatgagcggt gctgtctttg caagtgatac cgatcccgaa gctggtgggc 60 ctagtgaagc tggtgggcct agtggaactg ttgggcccag tgaagctggt gggcctagtg 120 aagctggtgg gcctagtgga actggttggc ctagtgaagc tggtgggcct agtgaagctg 180 gtgggcctag tgaagctggt gggcctagtg aagctggtgg gcctagtgga actggttggc 240 ctagtggaac tggttggcct agtgaagctg gttggtctag tgaacgattt ggatatcagc 300 ttcttccgta ttctagaaga atagttatat ttaatgaagt ttgtttatct tatatataca 360 aacatagtgt tatgatattg gaacgagata gggtgaacga tggtcataaa gactacattg 420 aagaaaaaac caaggagaag aataaattga aaaaagaatt ggaaaaatgt tttcctgaac 480 aatattccct tatgaagaaa gaagaattgg ctagaatatt tgataatgca tccactatct 540 cttcaaaata taagttattg gttgatgaaa tatcaaacaa ggcctatggt acattggaag 600 gtccagctgc tgataatttt gaccatttcc gtaatatatg gaagtctatt gtacttaaag 660 atatgtttat atattgtgac ttattattac aacatttaat ctataaattc tattatgaca 720 ataccgttaa tgatatcaag aaaaattttg acgaatccaa atctaaagct ttagttttga 780 gggataagat ca 792 2 2732 DNA Babesia microti 2 aaaccctaaa ccctaaaccc taaaccctaa accctaaacc cctaaaccct aaaccctaaa 60 ccctaaaccc taaaccctaa aaccctaaac cctaaaccct aaaccctaaa ccctaaaccc 120 taaaccctaa accctaaacc ctaaacccta aaccctaaac cctaaaccct aaaccctaaa 180 ccctaaaccc taaaccctaa accctaaacc ctaaacccct aaaccctaaa ccctaaaccc 240 taaaccctaa accctaaacc ctaaacccta aaccctaaac cctaaaccct aaaccctaaa 300 ccctaaaccc taaaccctaa accctaaacc ctaaaaccct aaaccctaaa ccctaaaccc 360 taaaccctaa accctaaacc cctaaaccct aaaccctaaa ccctaaaccc taaaccctaa 420 acccctaaac cctaaacccc taaaccctaa accctaaacc ctaaacccta aaccctaaac 480 cctaaaccct aaaccctaaa ccctaaaccc taaaccccta aaccctaaac cctaaaccct 540 aaaccctaaa ccctaaaccc taaaccctaa accctaaccc taaccctaac cctaacccta 600 acctagcctt cattgacgtc tatccccaat cttagaaaaa tcttcaaatc gattctagaa 660 taactggaaa caattatcag aaattgtata actgcttatt agcttattag cttattagtt 720 aggatgtatg cacattgatg acaactagat gcagcaccac aatcactacc acgtaccaat 780 catataccaa taatgtacta ataatgtacc aataactatg gtttataaag atggtgtcat 840 ttaaatcaat attagttcct tatattacac tctttttaat gagcggtgct gtctttgcaa 900 gtgataccga tcccgaagct ggtgggccta gtgaagctgg tgggcctagt ggaactgttg 960 ggcccagtga agctggtggg cctagtgaag ctggtgggcc tagtggaact gttgggccca 1020 gtgaagctgg tgggcctagt gaagctggtg ggcctagtgg aactggttgg cctagtgaag 1080 ctggtgggcc tagtgaagct ggtgggccta gtggaactgt tgggcccagt gaagctggtg 1140 ggcctagtga agctggtggg cctagtggaa ctggttggcc tagtgaagct ggtgggccta 1200 gtgaagctgg tgggcctagt gaagctggtg ggcctagtga agctggtggg cctagtggaa 1260 ctggttggcc tagtggaact ggttggccta gtgaagctgg ttggtctagt gaacgatttg 1320 gatatcagct tcttccgtat tctagaagaa tagttatatt taatgaagtt tgtttatctt 1380 atatatacaa acatagtgtt atgatattgg aacgagatag ggtgaacgat ggtcataaag 1440 actacattga agaaaaaacc aaggagaaga ataaattgaa aaaagaattg gaaaaatgtt 1500 ttcctgaaca atattccctt atgaagaaag aagaattggc tagaatattt gataatgcat 1560 ccactatctc ttcaaaatat aagttattgg ttgatgaaat atcaaacaag gcctatggta 1620 cattggaagg tccagctgct gataattttg accatttccg taatatatgg aagtctattg 1680 tacttaaaga tatgtttata tattgtgact tattattaca acatttaatc tataaattct 1740 attatgacaa taccgttaat gatatcaaga aaaattttga cgaatcctgg acacagacat 1800 taaaagaata agcctgcttg ggggtttctg ggcatctctt catgagtgcc agtcacacaa 1860 ctcttctgtg agccttctac aataaggact ttgtgtgctt cgatattttt ttagactaaa 1920 gtgaactctc tcctccacct ttggcttcag ttagttattt caaatggcaa aagttattaa 1980 aaattccagt gtggaaactg gcttaaccaa caggaaaggg gttttgaggt cgcatcacta 2040 agcatcaagt ttaacaccaa catgcctgga ggattggctt agccggttgc tagggcaggc 2100 ctgtggcagg gttcttatcc cagctattaa cgctcccttc ccactcctcc aagtcctgca 2160 agtcctggat acagtgaaat gtaattgcat atcccatatc ctttgctagt atcaaatgga 2220 taaaacccaa aatggagtca taccaaatga tctcatgtat acaatacctg aatagtcttg 2280 aactgatgca ctgttagata gtatgcactt actcttcagc tattcatagt gtgcctctgc 2340 acagtgatgg aaaagaggag cactggggga gctcggtttt caagggacaa aggagaataa 2400 gacacacaaa gaaatccaag gtagagcaga gaaaggatgg agacacagaa ggtttgcagg 2460 aacaggaagc gaaggatgct ccagtctgag ggggagggga aagagagcct cttgagtagc 2520 cagcacctga acttggcctg gaagcttggt ggataaggca ggataaagga ggtgtggcct 2580 ctttggtatc ctcccattga taaaggagct ccctgaccct tcactagacc atcatcagtc 2640 ctatggttct tagaccaata gaacacaatg gaattgattt gttccacttt ccaggttaag 2700 acttacagtc agggaagttt gtttttcttg cc 2732 3 2430 DNA Babesia microti 3 aactagatgc agcaccacaa tcactaccac gtaccaatca tataccaata atgtactaat 60 aatgtaccaa taactatggt ttataaagat ggtgtcattt aaatcaatat tagttcctta 120 tattacactc tttttaatga gcggtgctgt ctttgcaagt gataccgatc ccgaagctgg 180 tgggcctagt gaagctggtg ggcctagtgg aactgttggg cccagtgaag ctggtgggcc 240 tagtgaagct ggtgggccta gtggaactgg ttggcctagt gaagctggtg ggcctagtga 300 agctggtggg cctagtgaag ctggtgggcc tagtgaagct ggtgggccta gtggaactgg 360 ttggcctagt ggaactggtt ggcctagtga agctggttgg tctagtgaac gatttggata 420 tcagcttctt ccgtattcta gaagaatagt tatatttaat gaagtttgtt tatcttatat 480 atacaaacat agtgttatga tattggaacg agatagggtg aacgatggtc ataaagacta 540 cattgaagaa aaaaccaagg agaagaataa attgaaaaaa gaattggaaa aatgttttcc 600 tgaacaatat tcccttatga agaaagaaga attggctaga atatttgata atgcatccac 660 tatctcttca aaatataagt tattggttga tgaaatatca aacaaggcct atggtacatt 720 ggaaggtcca gctgctgata attttgacca tttccgtaat atatggaagt ctattgtact 780 taaagatatg tttatatatt gtgacttatt attacaacat ttaatctata aattctatta 840 tgacaatacc gttaatgata tcaagaaaaa ttttgacgaa tccaaatcta aagctttagt 900 tttgagggat aagatcacta aaaaggatgg agattataac actcattttg aggacatgat 960 taaggagttg aatagtgcag cagaagaatt taataaaatt gttgacatca tgatttccaa 1020 cattggggat tatgatgagt atgacagtat tgcaagtttc aaaccatttc tttcaatgat 1080 caccgaaatc actaaaatca ccaaagtttc taatgtaata attcctggaa ttaaggcact 1140 aactttaacc gtttttttaa tatttattac aaaatagatg taataccaga tgtatacatt 1200 attatatatt acaaaattta cacattattt atgtatgaac gaacgaacat ctcagtctta 1260 aatgaagaaa ttgggataaa tatggaaata gattaaagta acatgagaaa gatgaatata 1320 atattagaat atgaaattta acagaaataa aatgaagtaa aagagtgtat tttgtaataa 1380 tttataataa attagtatac aatgattata ttacagatga ctattgatta ttgtatcaat 1440 taaatattga ttattaatga tatcatatat gtatatgtta atgattgatt tgttatacgt 1500 tgtgaatatg ttatataatg acatactata ataattaata taatgtagag gatatttttt 1560 ttaatagtat ttaatgaata ttatagttat aattataata atgtagataa aaatgacatt 1620 aatttgaatg tttaaattga aatgtatgta aaaatatgta tttataatct gaattgatta 1680 ataatataat attctacaat taattatttt tgtaattata ataattgatt atattaatct 1740 ttgaattatt ataaataata ttatacttca ttaaattatt tcacataaat ttccaaatta 1800 ttatccttta tcttaatgtt atccaatttt acacatcttt cttcattaca atattttttt 1860 actaatcctg tatgctcata ttcatattct ttagaaatat aacgaaaatt agatgtaact 1920 tcgccactta caagtaaact accatcaata taataataat gaataccatt catgtccgta 1980 tattctttat attttttatc atattttatt ttgtgattat tccattcatt tgtatcatta 2040 ttcaatgaga gaaataatag cagaaagatc cttctataga aacataaaat tcaattaata 2100 ctggattatt atgtttgcaa gtatagatgt ttaaatcaat aacactacca gttggtaatt 2160 tagcattgtc atcaaattca attatataat cagaaatttt gattttatca attttattcg 2220 gatgtgataa tttattttgt tctgattcat cgatcatgta tacaaatact attgttaaag 2280 gttccctatc cttataatta aagtggccaa taagattggc attaattaca ttagtagtgt 2340 gtgtatttgt aatagtatca ttagtggtac tgacagttgt tataggtttt gatttccata 2400 atgaaacatc atttttatct acacaataca 2430 4 1991 DNA Babesia microti 4 aatgtacaag atcaaaattt ctgattatat aattgaattt gatgacaatg ctaaattacc 60 aactgataat gttattggta tatccatcta tacttgtgaa cacaataatc cagtattaat 120 tgaattttat gtttctaaaa aaggatcaat ctgctattat ttctactcaa tgaataatga 180 tacaaataaa tggaataatc acaaaataaa atatgacaaa agatttaatg aacatactga 240 catgaatggt attcattatt attatattga tggtagttta cttgcgagtg gcgaagttac 300 atctaatttt cgttatattt ctaaagaata tgaatatgag catacagaat tagcaaaaga 360 gcattgcaag aaagaaaaat gtgtaaatgt ggataacatt gaggataata atttgaaaat 420 atatgcgaaa cagtttaaat ctgtagttac tactccagct gatgtagcgg gtgtgtcaga 480 tggatttttt atacgtggcc aaaatcttgg tgctgtgggc agtgtaaatg aacaacctaa 540 tactgttggt atgagtttag aacaattcat caagaacgag ctttattctt ttagtaatga 600 aatttatcat acaatatcta gtcaaatcag taattctttc ttaataatga tgtctgatgc 660 aattgttaaa catgataact atattttaaa aaaagaaggt gaaggctgtg aacaaatcta 720 caattatgag gaatttatag aaaagttgag gggtgctaga agtgagggga ataatatgtt 780 tcaggaagct ctgataaggt ttaggaatgc tagtagtgaa gaaatggtta atgctgcaag 840 ttatctatcc gccgcccttt tcagatataa ggaatttgat gatgaattat tcaaaaaggc 900 caacgataat tttggacgcg atgatggata tgattttgat tatataaata caaagaaaga 960 gttagttata cttgccagtg tgttggatgg tttggattta ataatggaac gtttgatcga 1020 aaatttcagt gatgtcaata atacagatga tattaagaag gcatttgacg aatgcaaatc 1080 taatgctatt atattgaaga aaaagatact tgacaatgat gaagattata agattaattt 1140 tagggaaatg gtgaatgaag taacatgtgc aaacacaaaa tttgaagccc taaatgattt 1200 gataatttcc gactgtgaga aaaaaggtat taagataaac agagatgtga tttcaagcta 1260 caaattgctt ctttccacaa tcacctatat tgttggagct ggagttgaag ctgtaactgt 1320 tagtgtgtct gctacatcta atggaactga atctggtgga gctggtagtg gaactggaac 1380 tagtgtgtct gctacatcta ctttaactgg taatggtgga actgaatctg gtggaacagc 1440 tggaactact acgtctagtg gaacttggtt tggaaaatga aaaattagct ctagaaacac 1500 tttattgtta atttttaaaa acctattgaa aaatcagatt gtaaaacata attccacttc 1560 taaccatgct atgatttaac taatcaggac aaaaagaaag cataatcaac attattcatt 1620 cagtgatggt gacataattc agagaatgtg gcaattgcct cttgaagacc agagttccat 1680 ccacaggacc cacatggtta aaggagagag ctaactcctg aaagttgtcc tctgactaac 1740 acattcaact tttgagtgtc tcatttatgt gttggcttct gtctaatgtg ggaaaatcat 1800 taagggctct taaatcagat cctcattctc tctattaata aactatgtga taacatcctt 1860 cagctatgaa aatgtcagga gagagtcagg aaaatggaag atattgttca ggacttaact 1920 aggtggtggc acacagttcc tttacacaga ttcctcagga caagttttag gtgaggtttt 1980 gatctatcct g 1991 5 1271 DNA Babesia microti 5 ttcactaggc caaccagctt cactaggcca accagcttca ctaggccaac cagcttcact 60 aggccaacca gcttcactag gccaaccagc ttcactaggc caaccagttc cactaggccc 120 accagcttca ctaggcccac cagcttcact aggcccacca gcttcactag gccaaccagt 180 tccactaggc ccaccagctt cactaggccc accagcttca ctaggcccac cagcttcact 240 aggcccacca gcttcactag gcccaccagc ttcactaggc ccaccagctt cactaggccc 300 accagcttca ctaggcccac cagcttcact aggcccaaca gttccactag gcccaccagc 360 ttcgcgatcg gtatcacctg caaagacagc accgctcatt aaaaagagtg taatataagg 420 aactaatatt gatttaaatg acaccatctt tataaaccat agttattggt acattattag 480 tacattattg gtatatgatt ggtacgtggt agtgattgtg gtgctgcatc tagttgtcat 540 caatgtgcat acatcctaac taataagcta ataagctaat aagcagttat acaatttctg 600 ataattgctt ccagttattc tagaatcgat ttgaagattt ttctaagatt ggggatagac 660 gtcaatgaag gctaggttag ggttagggtt agggttaggg ttagggttta gggtttaggg 720 tttagggttt agggtttagg gttagggttt agggtttagg gtttagggtt taggctccca 780 agttgtcccg tgaaagggcc gtgtctttga taaattttgc cgtcctgtac gtttcctttc 840 tagaatgcac aaaaacaaga atttggcagc tagaaacatc gttaatcacc tcttggtaga 900 gaatttcgtt gattgcgttg aaacgtttga tagccttctt ctccttcacg ccataataca 960 cctgctccaa gggcacaggc ctaaagtggc tgccaaagta gaaaagccct cggtctagat 1020 taacagtgag aaatctagcc acgtcttcgt agtttggaag cgtggccgat agaccaacta 1080 gccttacgcg ttcgggcctc tgactcaggc gggccacaat agcctccagc actggacccc 1140 tagtgtcatg gagtaggtgt atttcatcaa ttataaccaa tctaagccgc tcaagcaggg 1200 gctcattgcc tgttttacgt gtaactacgt caaacttctc tggcgtagtt acaattatat 1260 gcgttttctc a 1271 6 1821 DNA Babesia microti 6 taaaccctaa acccctaaac cctaaaccct aaaccctaaa ccctaaaccc taaaccccta 60 aaccctaaac cctaaaccct aaaccctaaa ccctaaccct aaaccctaaa ccctaaaccc 120 taaaccctaa accctaaccc taaccctaac cctaacccta acctagcctt cattgacgtc 180 tatccccaat cttagaaaaa tcttcaaatc gattctagaa taactggaag caattatcag 240 aaattgtata actgcttatt agcttattag cttattagtt aggatgtatg cacattgatg 300 acaactagat gcagcaccac aatcactacc acgtaccaat catataccaa taatgtacta 360 ataatgtacc aataactatg gtttataaag atggtgtcat ttaaatcaat attagttcct 420 tatattacac tctttttaat gagcggtgct gtctttgcag gtgataccga tcgcgaagct 480 ggtgggccta gtggaactgt tgggcctagt gaagctggtg ggcctagtga agctggtggg 540 cctagtgaag ctggtgggcc tagtgaagct ggtgggccta gtgaagctgg tgggcctagt 600 gaagctggtg ggcctagtga agctggtggg cctagtgaag ctggtgggcc tagtggaact 660 ggttggccta gtgaagctgg ttggcctagt gaagctggtt ggcctagtga agctggttgg 720 cctagtgaag ctggttggcc tagtgaagct ggttggccta gtgaacgatt tggatatcag 780 cttctttggt attctagaag aatagttata tttaatgaaa tttatttatc tcatatatac 840 gaacatagtg ttatgatatt ggaacgagat agggtgaacg atggtcataa agactacatt 900 gaagaaaaaa ccaaggagaa gaataaattg aaaaaagaat tggaaaaatg ttttcctgaa 960 caatattccc ttatgaagaa agaagaattg gctagaataa ttgataatgc atccactatc 1020 tcttcaaaat ataagttatt ggttgatgaa atatccaaca aagcctatgg tacattggaa 1080 ggtccagctg ctgatgattt tgaccatttc cgtaatatat ggaagtctat tgtacctaaa 1140 aatatgtttc tatattgtga cttattatta aaacatttaa tccgtaaatt ctattgtgac 1200 aataccatta atgatatcaa gaaaaatttt gacgacatag agaaattggg ctgttttcaa 1260 gctagaagct tcctccctgt taactaatgt attcatggtg ccagaaggtg ctatgcaggt 1320 tgctagggaa tcaaattcat caatagtcct gcccaagagt agtgtgttaa ctggcggtgc 1380 aagatgtgcc ctttgatgca gtagtggcat gcttgtttgt ggggtaaccc agtgctttct 1440 gattgaggtc tactccacag gaggaataga tacctgcttc tgtaaacttg gtcaaaactt 1500 atgactgcac atgaagacag agtggaaaag acctgaaaac acacacgggg tcaggactga 1560 ggaagacagg gttagtatta gagagatttg gggaaaaaaa gagttagcaa atatagagtg 1620 tgatagtcta atggggggat gaatggtatc aaaatgaatt atttatatgt ataaaactga 1680 caatttttta attgtgaaaa ggaatgcaat ccgacccatc tgggggaatt ctagctagca 1740 tcagtgagag aagaggcaag gtgttaggaa atcgtgcaga acatgctcat ccaggcttta 1800 tttctccatt tacatctaga g 1821 7 4223 DNA Babesia microti 7 catcacaatt attggctgtt acatcactat agtgctgtat gtaaaaaatt ataaagtgtg 60 acatcattat aatgcaatat gacatcacaa ttatatactg tgacttcact atcttgcact 120 ttaacatcac aattatacat tgtgacatca atatactgca ctatgacatc acgattattg 180 actgtgacat caatacattc tctatgaaca cagttataca ctctgacatc actagcttgc 240 actgtgacat gacaattaaa aactgtgaca tcaatataat ggactgtgac ctacaattat 300 tcactgtgaa accacaacac tgcaattgtg tataattggg atgggtactg atctgctgcc 360 cgaggctcaa tagattacct aggcctcctc actgacaccc acattcaggg ggtcttgatc 420 agtcccatga tggattccca ggctgatgcc tgggattcaa gagttaacct ttgtctggtc 480 agctctttct gggggttaaa cggattaaat gttttaataa taagtcacaa tatagaaaca 540 tatttttagg tacaatagac ttccatatat tacggaaatg gtcaaaatca tcagcagctg 600 gaccttccaa tgtaccatag gctttgttgg atatttcatc aaccaataac ttatattttg 660 aagagatagt ggatgcatta tcaattattc tagccaattc ttctttcttc ataagggaat 720 attgttcagg aaaacatttt tccaattctt ttttcaattt attcttctcc ttggtttttt 780 cttcaatgta gtctttatga ccatcgttca ccctatctcg ttccaatatc ataacactat 840 gttcgtatat atgagataaa taaatttcat taaatataac tattcttcta gaataccaaa 900 gaagctgata tccaaatcgt tcactaggcc aaccagcttc actaggccaa ccagcttcac 960 taggccaacc agcttcacta ggccaaccag cttcactagg ccaaccagct tcactaggcc 1020 aaccagcttc actaggccca ccagcttcac taggcccacc agcttcacta ggcccaccag 1080 cttcactagg cccaacagtt ccactaggcc caccagcttc actaggccca ccagcttcac 1140 taggcccacc agcttcacta ggcccaccag cttcactagg cccaccagct tcactaggcc 1200 caccagcttc actaggccca ccagcttcac taggcccaac agttccacta ggcccaccag 1260 cttcgcgatc ggtatcacct gcaaagacag caccgctcat taaaaagagt gtaatataag 1320 gaactaatat tgatttaaat gacaccatct ttataaacca tagttattgg tacattatta 1380 gtacattatt ggtatatgat tggtacgtgg tagtgattgt ggtgctgcat ctagttgtca 1440 tcaatgtgca tacatcctaa ctaataagct aataagctaa taagcagtta tacaatttct 1500 gataattgct tccagttatt ctagaatcga tttgaagatt tttctaagat tggggataga 1560 cgtcaatgaa ggctaggtta gggttagggt tagggttagg gttagggttt agggtttagg 1620 gtttagggtt tagggtttag ggttagggtt tagggtttag ggtttagggt ttagggttta 1680 ggggtttagg gtttagggtt tagggtttag ggtttagggt ttagggttta gggaaggctg 1740 agaaccactg acttagactt tccaagactt tgtcatctta tgacttgccg gttgcctcgt 1800 ttctccacac agcaacctat gttctctctt attacagttt ctgtgggaca tgtcatgctt 1860 ccagcttcga gaatggaagc ctattgtctt aatgggtgag caaagtgggc ccattcatta 1920 atcacagact aatccaaaag gaaatgtgac acctgaccta agtccgacca ataggagcca 1980 ggaaagctca cttctggaat tgtgacttag atatcacgga tgcatacaga ctctttttcc 2040 tgctgaaaca aatggtgagg acctgtccac ccttgtggga agcttgcagt gtaagattct 2100 aatccatatt ggggaaataa ggctgagaag agagagttcc aggccttgtg acagaatcta 2160 atccctggat aaagtctctc tttttacaaa gaacatcagt gttgcaagct ccaaattcct 2220 gttcttactt tcttgagtct gttttcttta tgtataaccc aaagcacttt aactgacaca 2280 gctgtgaagt gagaatattt catagaaatc ctattgtttt gatgtcttct aaaaaagaaa 2340 aaaagcaatg atctgtaaca ttttttaact taaataatta gattgattta agtgacatca 2400 aaacatctgg aaaatggtgt ggacacaaat tcactagaga gccatatttt ttgctaacta 2460 attgagaaat taatcactgg caagtctttg gtaaaagtat cacctcagtc atgatctctc 2520 ctgccttcat gacattttcc tcattggtgt gaggatgcta ttctgctttc tatgtgacca 2580 ggaaatagtg ctgtcttctg tctagttatg atttaggttg tacaccaggt tttcacatat 2640 gttccctaac gtctgtagta ggaccaggga ctggttggct tcaagttgtt ggatatggtt 2700 accttaagtc attcatgtac aggaactcat ttgagatgat aggaaatgaa gtgaaagatt 2760 ttcttgcccc tgttaagtaa gataaaaagg attgttatga tggggcagga gcagatctat 2820 ttccaataaa cagaatttga agtgtttgtg tgatattcag atacctcatt gtcatttgaa 2880 tgaattactc ctgctctcag tgaagatgtc taagctgcaa ataagaaatg gagagcgctg 2940 tcagaagtca gatggaattg agaatagggg cctggctgca atctgtggag actgcctaaa 3000 gcagctagat aagaaactag cagctgggga gagaaagatc gaatttagtc ggcctgtttt 3060 atattttctt ataaaaaata actgcttcga aatgtttgag aagatagagg caatgagcag 3120 aaagttgttc cttaaatcag ttatagaatg aacacataca cgggcactca gatcaagcca 3180 tgctgagctt gagacaccgg gtgacgcgtg acttgtttat tcccaggctg caaaggagag 3240 taaatgaagt aacgggaagg cccggtgtgg taggcacact cctgcctggc accatctgct 3300 gcttttgtcc ctgttactcc ttgttccttt ccctcctttt ctccctccct tcctccctcc 3360 ctctctccct ccttcacact tctgtcttta tttcctcctg ggagttaatt ggtggtagcc 3420 cctctgtgct gttctttcgg gggtgccttt aatttcgaca atacaatgcc atccatgggg 3480 gcattttata tacagtaata attgtcattg atgtggccat aaggtacttt tttgtggtac 3540 ccttcttgaa cagaacagac acagaagggc gtgcgtgcgt gcgtgcgtgc gtgcgtgcgt 3600 gcgtgtgtgc gtgtgtgcgt gcgtgtgtgc gtgtgtgcgt gcgtgcgtgt gtgcgtgcgt 3660 gcgtgtgtgc gtgtgtgtgt gtgtgtgtgt gtgtgtgtgt gtgtgtgtgt gtgtgttggg 3720 atggggtggg gagcgctagc ttcctacttg ttgtagggtg atgaggtttt atatagtctg 3780 tttctgagac agttaccaaa tccagctggg ttactttttt tttggttttt tatgagacag 3840 ggtttctctg tattgttttg gaggctgtcg gtccagcctg gtctcgaact cacagagatc 3900 cgcctgcctc tgcctcccga gtgctgggat taaaggtgtg cgccaccacc gcccggcccc 3960 agctgggtta cttatcactc agtggatctt tctcttttct ttgtaagaag aactttgcat 4020 tgtgggtcgt catggaagaa cacttggaaa ggtacccttt ctgccccacc cgtttattga 4080 atgagtcttt ttttttttta attaaatagc agaactttgg ggaaagattt agaaaaggcc 4140 cttttcatat tataatacga ggtataggat ggtttaagat aagagacttt ttgttagctg 4200 ttatcagttg agaaaggcac gag 4223 8 2287 DNA Babesia microti 8 ttataaacat atctaaatat tttaataata atgatgaaat ttaacataga taagataata 60 ttaatcaatt taatagtatt attgaatcga aatgtagtgt attgtgtgga tacaaataat 120 agttcattaa ttgaatcaca accagtaaca actaacattg acactgataa tacaattaca 180 acaaataaat acactggtac tataattaat gccaatattg ttgagtaccg tgaatttgag 240 gatgaacctt taacaatagg gtttagatac actatagata aatcacaaca aaataaatta 300 tcacatccaa ataaaattga taaaatcaaa ttttctgatt atataattga atttgatgac 360 aatgctaaat taccaactga taatgttatt tgtatatcca tctatacttg caagcataat 420 aatccagtat taattagatt ctcatgttct atagaaaaat attactacca ttacttctac 480 tcaatgaata atgatacaaa taaatggaat aatcacaaat taaaatatga taaaacatac 540 aatgaatata ctgacaataa tggtgttaat tattataaaa tctattatag tgataaacag 600 aattccccta ctaatggaaa tgaatatgag gatgtagcat tagcaagaat acattgtaat 660 gaagaaagat gtgcaaatgt aaaggtagat aaaattaaat ataagaattt ggaaatttat 720 gtgaaacagt taggtactat aattaatgcc aatattgttg agtaccttgt atttgaggat 780 gaacctttaa caatagggtt tagatacact atagataaat cacaacaaaa tgaattatca 840 catccaaata aaatttataa aatcaaattt tctgattata taattgaatt tgatgatgat 900 gctaaattaa caacaattgg tactgttgaa gatataacca tctatacttg caagcataat 960 aatccagtat taattagatt ctcatgttct atagaaaaat attactacta ttacttctac 1020 tcaatgaata ataatacaaa taaatggaat aatcacaact taaaatatga taatagattc 1080 aaagaacata gtgacaagaa tggtattaat tattatgaaa tctcagcttt caaatggagt 1140 ttctcttgtt ttttcgttaa taaatatgag cataaagaat tagcaagaat acattgtaat 1200 gaagaaagat gtgcaaatgt aaaggtagat aaaattaaat ataagaattt ggaaatttat 1260 gtgaaacagt taggtactat aattaatgcc aatattgttg agtaccttgt atttgaggat 1320 gaacctttaa caatagggtt tagatacact atagataaat cacaacaaaa tgaattatca 1380 catccaaata aaatttataa aatcaaattt tctgattata taattgaatt tgatgatgat 1440 gctaaattaa caacaattgg tactgttgaa gatataacca tctatacttg caagcataat 1500 aatccagtat taattagatt ctcatgttct atagaaaaat attactacta ttacttctac 1560 tcaatgaata ataatacaaa taaatggaat aatcacaact taaaatatga taatagattc 1620 aaagaacata gtgacaagaa tggtattaat tattatgaaa tctcagcttt caaatggagt 1680 ttctcttgtt ttttcgttaa taaatatgag cataaagaat tagcaagaat acattgtaat 1740 gaagaaaaat gtgtaaatgt aaaggtagat aacattggga ataaaaattt ggaaatttat 1800 gtgaaataat ttaatgaagt ataatattat ttataataat tcaaagatta atataattaa 1860 ttattataat tacaaaaata attaattgta gaatattata ttattaatca attcagatta 1920 taaatacata tttttacata catttcaatt taaacattca aattaatgtc atttttatct 1980 acattattat aattataact ataatattca ttaaatacta tttaaaaaaa tatcctctac 2040 attatatcaa tcaatataat atacaattat ataatatatt cacaatgtat aacaatcaac 2100 cctaacatgt acatacataa tatcattact aatcaatatt taattaataa aatatttaat 2160 agtcatctgt aatataatca ttgtatacta atttattata aattattaca aaatacactc 2220 ttttacttca ttttatttct gttaaatttc atattctaat attatattca tctttctcat 2280 gttactt 2287 9 2784 DNA Babesia microti 9 cactgctttc gcagcgtttc ttgcttttgg gaatatctca cctgtacttt ctgctggtgg 60 tagtggtggt aatggtggta atggtggtgg tcatcaagag caaaataatg ctaatgatag 120 tagtaatccc accggagccg gtggacaacc caataacgaa agtaagaaaa aggcagtaaa 180 acttgacttg gacctcatga aagaaacaaa gaatgtttgc accactgtta atactaaact 240 agtcggaaaa gcaaagagca aattaaacaa attagaaggt gaatcccata aggagtatgt 300 agctgagaaa acgaaggaga tagatgagaa aaataagaaa tttaacgaga atcttgttaa 360 aatagagaaa aagaagaaaa ttaaggttcc tgccgatact ggtgctgaag tggatgctgt 420 tgatgatggt gttgcgggtg cactatccga tttatcctcc gatatctccg ctattaagac 480 tctcaccgac gatgtatccg agaaggtttc tgaaaacttg aaagatgatg aggccagtgc 540 aacagaacac actgatataa aagaaaaagc caccctgctt caagagtctt gcaacggaat 600 tggcactatc ctagataagt tggccgaata tttaaataat gatacaactc aaaatatcaa 660 gaaagaattt gatgaacgca agaagaatct cacctctttg aagacaaagg tagaaaataa 720 ggatgaagat tatgttgatg ttaccatgac atcaaaaaca gatctgataa tacactgttt 780 aacttgcaca aacgatgcac acggactgtt tgatttcgaa tcgaagagct tgataaaaca 840 aacctttaaa ttgaggtcca aagatgaagg tgaactctgc taatttagat tttagatggg 900 ccatgtatat gttaaacagc aagattcatc ttatagaaag cagtttgatc gataacttca 960 ccttggataa tccatccgca tacgaaattt tacgcgtttc ttataactca aatgaatttc 1020 aagtacaatc accgcagaac attaacaatg aaatggaatc ttcaacgccc gaatccaata 1080 tcatttgggt tgtacatagt gatgttataa tgaaaaggtt caactgtaaa aatcgcaaat 1140 ctctcagtac tcattcactc actgaaaatg atattctcaa gtttggccgt atagaactct 1200 ctgttaaatg tataattatg ggcgcaggta tcactgcatc tgatcttaat ctaaagggat 1260 tggggtttat tagtccagat aaacaatcaa ctaatgtatg taactatttt gaagatatgc 1320 atgaatctta tcatattctt gatacacaaa gggcctcgga ttgtgtatca gatgatggcg 1380 ctgatattga tatatccaac ttcgacatgg tccaagacgg taacataaat tctgttgacg 1440 ctgattctga aacatgtatg gcaaactctg gcgtaacggt caataatact gaaaatgtta 1500 gtaatagtga gaattttgga aaattaaaat cattggtaag caccaccact cctttgtgcc 1560 gtatttgcct gtgtggtgaa tcagaccctg ggccactagt aaccccttgc aattgcaagg 1620 ggtccctaaa ttatgtccat cttgaatgcc taaggacttg gattaaaggg cggttgtcaa 1680 ttgtgaagga tgatgatgct tcctttttct ggaaagagct atcatgtgag ctatgcggga 1740 agccgtatcc atcggtccta caagtagatg atacagagac taatttgatg gatataaaaa 1800 aaccggatgc accatatgtg gtattggaaa tgagatcaaa ttctggtgat gggtgtttcg 1860 ttgtttctgt agctaaaaat aaggcgatta ttggacgggg gcatgaaagt gacgttaggt 1920 tgagtgatat ttcagtgtca cgaatgcatg cttctttgga attggatggt ggaaaagtag 1980 tgatacatga ccagcaatct aagtttggta cactcgttag ggccaaagcg cctttttcaa 2040 tgcctataaa gggtcccatc tgtctacagg taagcatttt ctttttgaac ttgaaaatat 2100 ctactcatag tctaaccatg gagaggggca tggaacatgt ccttctctaa tatttccaaa 2160 aaggatctat gcctgataac cttggtattg aaggtggctt tctcaaagtg agacattcca 2220 tttctgttgt tggagctatc ctatctgagg ttagtgttct ggtaaacatt cctagaaaac 2280 tcataaagca gaaatctgtg tgtatactaa attgcacaga gaactccacg tgtgtgctag 2340 acttcacaga gaactctgtg tgtgtgctaa actgcataga gaagaacatg ttgagtgcat 2400 catggttgag ggaaattgct ttatataaaa gatttatttt cctaaggtaa cttaggatta 2460 atttttctga aagcttagtt ttggtgagca caattgtgat ctttgtttct cagatggtcg 2520 ggaaggcact cccagaaagc aggtggatac acactacact gcatgctaca ctctgtagac 2580 taggagtatc gttttcacac ttatgaaata gtcaccatgc tgggcacaaa tatcttttta 2640 tacaccatat attgttcatg ttcaggtcca catttcaatt tgtatgtgaa aagcatccgg 2700 ggctgtctga taaacacata gaaatgaagg aaacagtgta tgtaactgaa gccttcagtc 2760 ctttgcaatt tctttgattc ttag 2784 10 3701 DNA Babesia microti 10 acctatttat aatatagtat attactggtt tgttttaaat cgaaaaaatg tattgtattt 60 aagaatgaaa ttatttattt atcatgatta tcatatttct aaatattaaa atctagtaac 120 ggttgcttga atatttattt aaattatatg tagtagtatt aaaatgtgtt atatataagt 180 agtgttctaa atcatcatta gtaatattgt ataaattaat tgtaaaaatt gcgatactac 240 aattaatcaa caattaaaat atatcagtat agataattta aataaataat tagataagat 300 cttaaggatt aaatgacgaa tttagaatga taaataatca tcataggcat ttgttataat 360 atcattaatt atattcatgt ggttataatt ataaaagtat atatagtttt gtaattgtaa 420 tgatataaaa ttagaacaga tataattaat aattcaaata ttatattaat tttattatat 480 atgattatta ttgatattta tataattaca tattgttatt gtatcattta atgattatat 540 atcaatatcc atatatatat ataataattg aattataatt aaattaattg gcatattaca 600 tttataataa tatattatta gtcaatatga catcatatta tattatccat catgattgtg 660 aatgtaacta gaacattgat tattatatta aatcacatat taatactgat tataataata 720 tcattgataa tctaataata tagtattatc tctaataata ttgtattatc tctaatatta 780 tggtataata gatactgtga aaataaattc aactggagat aaggaaacca ttttgtatag 840 atattttata caaattatta tgaaataatc taaataaatg acaaaaaatc gattatacaa 900 atcacattaa tgacaaacaa acttgtatac atatattgat taacattaca aaactaaatt 960 ataatattta gattgataat tgttataata cttaacaata ttctactttt taatataatt 1020 ttttattcaa taatatactc tttcatattt tgtactattt tatataatca tatatattat 1080 ataattatat atatttgata attgaatata tcaataatga tgatatacat gaatatgcat 1140 atatacccca tataatgtta ttatatttag tgcttacatt attaattata aatatattta 1200 aataattaaa taataatgaa aattaacata gacaatataa tattaatcaa tttgataata 1260 ttattgaatc gtaatgtagt atattgtgtg gataaaaatg atgtttcatt atggaaatca 1320 aaacctataa caactgtcag taccactaat gatactatta caaataaata cactagtact 1380 gtaattaatg ccaattttgc tagctaccgt gaatttgagg atagggaacc tttaacaata 1440 ggatttgaat acatgatcga taaatcacaa caagataaat tatcacatcc aaataaaatt 1500 gataaaatca aaatttctga ttatataatt gaatttgatg acaatgctaa attaccaact 1560 ggtagtgtta atgatatatc catcattact tgcaagcata ataatccagt attaattaga 1620 ttctcatgtt taatagaagg atctatctgc tattatttct acttattgaa taatgataca 1680 aataaatgga ataatcacaa attaaaatat gataaaacat acaatgaaca tactgacaat 1740 aatggtatta attattataa aatcgattat agtgaatcta cagaacctac taccgaatct 1800 actacctgtt tttgttttcg caaaaaaaat cataaatctg agcgtaaaga attagaaaat 1860 tataaatatg agggtacaga attagcaaga atacattgta ataaagggaa atgtgtaaaa 1920 ttgggtgaca ttaagataaa ggataagaat ttggaaattt atgtgaaaca gttaatgtct 1980 gtaaatactc cagtaaattt tgacaaccct acatcgatta atctaccaac tgtcagtact 2040 accaatgata ctattacaaa taaatacact ggtactataa ttaatgccaa tattgttgag 2100 tactgtgaat ttgaggatga acctttaaca atagggttta gatacactat agataaatca 2160 caacaaaata aattatcaca tccaaataaa attgataaaa tcaaattttt tgattatata 2220 attgaatttg atgatgatgt taaattacca acaattggta ctgtcaatat tatatatatc 2280 tatacttgcg agcataataa tccagtatta gttgaattta tagtttctat agaagaatct 2340 tactactttt acttctactc aatgaataat aatacaaata aatggaataa tcacaaatta 2400 aaatatgata aaagattcaa aaaatatact aagaatggta ttaattgtta tgaatatgta 2460 cttcgtaaat gcagttctta tactcgtaaa aatgaatatg agcataaaga attagcaaga 2520 atacattgta atgaagaaaa atgtgtaaat gtaaaggtag ataacattga gaaaaagaat 2580 ttggaaattt atgtaaaata atttaacgaa gtgtaatatg taaaatagtt taatgaagta 2640 taatattatt taaaataatt caaaatttca gaaattaata taattaatta ttataaatac 2700 aaaataatta attacaaatg tgtattgtta gttatttcag attgtaaata catattttac 2760 atacattttt attaaaactt tcaaattaat attttcattt ttataagcat tattataatt 2820 atatactata attatcagtc atcaaataat atccaaagtt atcctctaca ttatatcaat 2880 catacagtat acaattatat aaaatattaa caacatataa caaccaacat taatatatac 2940 ataatatctt tattaatcaa tatttaatca atacaataat taatagttaa ctaactatac 3000 acatagtgta tactaaatta ttataaatta tatgttataa ttacaaaaac gtcatttact 3060 tattttattt cagttatgtt tcatagtcta atttagattt ggtgaaacgc atctggctga 3120 tgtgctggtg agcaagcagt tccacgaagc aaacaatatg actgatgcgc tggcggcgct 3180 ttctgcggcg gttgccgcac agctgccttg ccgtgacgcg ctgatgcagg agtacgacga 3240 caagtggcat cagaacggtc tggtgatgga taaatggttt atcctgcaag ccaccagccc 3300 ggcggcgaat gtgctggaga cggtgcgcgg cctgttgcag catcgctcat ttaccatgag 3360 caaccccgaa ccgtattcgt tcgttgattg gcgcgtttgc gggcagcaat ccggcagcgt 3420 tccatgccga agatggcagc ggttacctgt tcctggtgga aatgcttacc gacctcaaca 3480 gccgtaaccc gcaggtggct tcacgtctga ttgaaccgct gattcgcctg aaacgttacg 3540 atgccaaacg tcaggagaaa atgcgcgcgg cgctggaaca gttgaaaggg ctggaaaatc 3600 tctctggcga tctgtacgag aagataacta aagcactggc ttgataaata accgaatggc 3660 ggcaatagcg ccgccattcg gggaatttac ccctgttttc t 3701 11 1287 DNA Babesia microti 11 ctcgtgccgc tcgtgccgat tattataaat atttagttga tgaatatagt tctcccaggg 60 aggaaagaga attagcaaga gtacattgta atgaagaaaa atgtgtaaaa ttggatggca 120 ttaagtttaa ggataagaat ttggaaattt atgtgaaaca gttaatgtct gtaaatactc 180 cagttgtatt tgacaacaat acattgatta atccaactag cagcagtggt gccactgatg 240 acataacata tgaattatcg gtggaatcac aacctgtacc aactaacatt gacacaggta 300 ataatattac aacaaataca tcaaataata atctaattaa agctaaattt ctttataatt 360 ttaatcttcc tggtaaacct tcaacaggac tatttgaata cactatagat aaatcagaac 420 aaaataaatt atcacatcca aataaaattg ataaaatcaa attttctgat tatataattg 480 aatttgatga tgatgctaaa ttaccaacaa ttggtactgt caatattata tccatcatta 540 cttgcaagca taataatcca gtattagttg aatttatagt ttctacagaa atatattgct 600 actacaatta cttctactca atgaataata atacaaataa atggaataat cacaaattaa 660 aatatgataa aagatataaa gaagaatata cagatgataa tggtattaat tattataaat 720 taaatgatag tgaacctact gaatctacag aatctactac ctgtttttgt tttcgcaaaa 780 aaaatcataa atatgaaaat gagcgtacag cattagcaaa agaacattgc aatgaagaaa 840 gatgtgtaaa ggtagataac attaaggata ataatttgga aatttatcta aaataattta 900 acgaagtata atattattta taataattca aaatttcaga aattaatata attaattatt 960 ataaatacaa aataattaat tacaaatgtg tattgttagt tatttcagat tgtaaataca 1020 tattttacat acatttttat taaaactttc aaattaatat tttcattttt ataagcatta 1080 ttataattat atactataat tatcagtcat caaataatat ccaaagttat cctctacatt 1140 atatcaatca tacagtatac aattatataa aatattaaca acatataaca accaacatta 1200 atatatacat aatatcttta ttaatcaata tttaatcaat acaataatta atagttaact 1260 aactatacac atagtgtata ctaaatt 1287 12 572 DNA Babesia microti 12 cttcattgac gtctatcccc aatcttagaa aaatcttcaa atcgattcta gaataactgg 60 aaacaattat cagaaattgt ataactgctt attagcttat tagcttatta gttaggatgt 120 atgcacattg atgacaacta gatgcagcac cacaatcact accacgtacc aatcatatac 180 caataatgta ctaataatgt accaataact atggtttata aagatggtgt catttaaatc 240 aatattagtt ccttatatta cactcttttt aatgagcggt gctgtctttg caagtgatac 300 cgatcccgaa gctggtgggc ctagtgaagc tggtgggcct agtgaagctg gtgggcctag 360 tggaactgtt gggcccagtg aagctggtgg gcctagtgaa gctggtgggc ctagtggaac 420 tggttggcct agtgaagctg gtgggcctag tgaagctggt gggcctagtg gaactggttg 480 gcctagtgaa gctggttggt ctagtgaacg atttggatat cagcttcttc cgtattctag 540 aagaatagtt acatttaatg aagtttgttt at 572 13 2338 DNA Babesia microti 13 ctcgtgccga atcttagaaa aatcttcaaa tcgattctag aataactgga aacaattatc 60 agaaattgta taactgctta ttagcttatt agcttattag ttaggatgta tgcacattga 120 tgacaactag atgcagcacc acaatcacta ccacgtacca atcatatacc aataatgtac 180 taataatgta ccaataacta tggtttataa agatggtgtc atttaaatca atattagttc 240 cttatattac actcttttta atgagcggtg ctgtctttgc aagtgatacc gatcccgaag 300 ctggtgggcc tagtggaact gttgggccca gtgaagctgg tgggcctagt gaagctggtg 360 ggcctagtgg aactggttgg cctagtgaag ctggtgggcc tagtgaagct ggtgggccta 420 gtggaactgg ttggcctagt gaagctggtt ggtctagtga acgatttgga tatcagcttc 480 ttccgtattc tagaagaata gttacattta atgaagtttg tttatcttat atatacaaac 540 atagtgttat gatattggaa cgagataggg tgaacgatgg tcataaagac tacattgaag 600 aaaaaaccaa ggagaagaat aaattgaaaa aagaattgga aaaatgtttt cctgaacaat 660 attcccttat gaagaaagaa gaattggcta gaatatttga taatgcatcc actatctctt 720 caaaatataa gttattggtt gatgaaatat caaacaaggc ctatggtaca ttggaaggtc 780 cagctgctga taattttgac catttccgta atatatggaa gtctattgta cttaaagata 840 tgtttatata ttgtgactta ttattacaac atttaatcta taaattctat tatgacaata 900 ccattaatga tatcaagaaa aattttgacg aatccaaatc taaagcttta gttttgaggg 960 ataagatcac taaaaaggac gtgtatgtaa atgatcacta aacgggctcc acatatctat 1020 tactggggta gatattataa gttatggata agtaaattta tggcgataga ttccaacaaa 1080 tttgtggtta gtagcgacaa tgattatggc tagtgtgtgg agtacttatg agtgaatgat 1140 tgtagtggtg gctagcagtg agtatagtta ggtaatccct acacacccat ttaaataaga 1200 tgcaaatagc atttaaattg acatatattg tgtgtatgtc cacgtttatt gcgtttccat 1260 gacgtatctg ctgaggtgtg tcttgtgtat ctaagtacca gacacagcac ttaaattgtt 1320 atgggcatga cgatggatgt taaaggttta tacactccaa aggcacgttc ttctgctagg 1380 gaaacgaggg acaagttcga ttttgctata caaagcaagt ttcactccct ggactttaca 1440 ctggatgact ttgatatagg tgcattcgtg gtaaacctca aaatttactc agggcgatgg 1500 tgcccatggg caggtttttt tggcaaggga acgacgtacc ggttttattt gcgtgttaaa 1560 atgcattttt aaatcacaac ttgtgaagta attgcctaat aatcacacag aaatggacag 1620 gaagctattt tcaagcggga aatcgaattg cacgggcatc tgagacatcc aaacatagca 1680 tggtatgtac atatttatcc agcttgtata cctggttcac tagccctact atgatattca 1740 tagtgatgga atattgttac aatggcgatc tatttaatta tatgtcaaaa catggccaac 1800 tgagtgaaga aagggtatca gagtatacag atatttacat agaattttgt tcgaagtcat 1860 ttgggccatt agaagctgcc acgacaaacg catagcgcac ttggatatta aaccagtaag 1920 gttctatgtt acagaggaga atatattatt ggaccatgaa aacaggtgta aattggcgga 1980 ctttggattc tctgcacaca tagggcattt gtaccgctca aacggagtgc tcatcatcgt 2040 ggcacgcatg gtaacacgca attwatggca gattattggt ctccggagca gtgtgccaaa 2100 catttgggtc tggggttgaa gtatggggag tatgatgaac aaagcgacat atgggcgttg 2160 ggcatattgg cagttgaatt gtttattgga taccctccat ttggatctac tactgaagag 2220 cccaacaatg tgattatgaa cagaatccac acttaccact ggaccaaaca tgtactttta 2280 tctattacgc agatttttga aatgaagagg gaaaaacatc tactctcgtc gacgcctg 2338 14 729 DNA Babesia microti 14 ttgcctggac cttctctgtc ctagaattac aggaattctc ttatactgtt taatacaaaa 60 cacttggaag aatttcacca attgcatatg aaacatggaa tccaagagac caaaatttaa 120 aaccttgaaa tagaagcact tatgccaata ttggaaatta cttagtgaag tgatccaaag 180 tactgatttg gtcagaagac atcaccaggg cactagctgg cctagtgacc tgagtatttg 240 tgaaagctga ttttaatgtt gagaacatga aggaagcagt attgaggtaa tggaatcttg 300 tagattatag tagaagccaa ctgagaccaa gaaatgtacg gtaggaatga aataaggtct 360 tgggtggtca ttgcatggag ctgtgaaagt gaagcgttgt tggggtatag attcgcaagt 420 cttggggcat gactatgtgg ggttaccaag gttaggttaa ctgaggtgga aagatccact 480 ctaaatgggg gagttaccat ttcatgtgct gggatcccag agatgtcaaa ggagaaaata 540 agctattgaa taagagcatc tatatccctt gcttcttggc tatggatgtt atgtgactag 600 tcatctctta gtcttacctt caccattata acaagatttt ctagaacttt gggttaaatt 660 aaatccttta ttcctcacgt tgctgtctta gttactttcc tgttgctttg ataaagcatt 720 ctggccaag 729 15 1448 DNA Babesia microti 15 acatgttgac ttttggaaat atacgttttc ataatataaa tctcccacca ttttcattgg 60 gcataattca ctcgattacg gtagaaaagg cgattaactc tgaagatttt gacggaatac 120 aaacactttt acaagtgtct atcattgcta gttacggtcc atctggcgat tacagtagtt 180 ttgtgttcac tccagttgta acagcagaca ccaacgtttt ttacaaatta gagacggatt 240 tcaaacttga tgttgatgtt attactaaga catcactaga attgcccaca agtgttcctg 300 gctttcacta caccgaaact atttaccaag gcacagaatt gtcaaaattt agcaagcctc 360 agtgcaaact taacgatcct cctattacaa caggatcggg gttgcaaata atacatgatg 420 gtttgaataa ttcgacaatt ataaccaaca aagaagttaa tgtggatgga acagatttag 480 ttttttttga attgctccct ccatcggatg gcattcccac cttgcgatca aaattatttc 540 ccgtcctgaa atcaattcca atgatatcta ccggggttaa tgaattactg ttggaagtac 600 tcgagaaccc ctctttccct agtgcaatta gcaattacac cggactgaca ggccgactta 660 acaaattact tacagtttta gacggtattg ttgatagcgc cattagtgtc aagactacag 720 aaactgtccc tgacgacgca gaaacttcta tttcttcatt gaaatcattg ataaaggcaa 780 tacgagataa tattactacc actcgaaacg aagttaccaa agatgatgtt tatgcattga 840 agaaggccct cacttgtcta acgacacacc taatatatca ttcaaaagta gatggtatat 900 cattcgacat gctgggaaca caaaaaaata aatctagccc actaggcaag atcggaacgt 960 ctatggacga tattatagcc atgttttcga atcccaatat gtatcttgtg aaggtggcgt 1020 acttgcaagc cattgaacac atttttctca tatcaaccaa atacaatgat atatttgatt 1080 acaccattga ttttagtaag cgtgaagcta ctgattctgg atcatttacc gatatattgc 1140 tcggaaacaa ggtgaaggaa tctttgtcat ttattgaggg tttgatttct gacataaaat 1200 ctcactcatt gaaagctggg gttacaggag gtatatcaag ttcatcatta tttgatgaaa 1260 tcttcgacga gttaaatttg gatcaagcaa caattagaac ccttgttgca ccattagatt 1320 ggccacttat ctcagacaaa agcctccacc cttcactgaa gatggttgtg gtcctgccag 1380 gatttttcat agttccttaa taacatgaca tttcatagtc ccttcagtcc tgatgacaag 1440 acggtgaa 1448 16 1350 DNA Babesia microti 16 gcctaagccc aaatgggatt taagcaggag gggataaaac agatgacctc caccatgccc 60 tactaactct aagctaagga aatccagcct gctggctatt tacctgcttt cctcgaagtg 120 aaaggccaga gtcaccccca atctttccca aaagattgaa gtcactctct ccatgccggc 180 aaaggtagat ggtgcgaggc tggacatgga tattcataag gtagtagaca attttactct 240 ggatgtagtc ctggactctg ttgaccagaa atctctggcc tacattaatc accttgatga 300 agacagatcc ctaggacaga gtagaaagag caattttatg gtcagaaaat ctgaaactag 360 gagtgtggca agcaaggggg caaggctatc agcacctagt gacaatccca gcacttagaa 420 ggcttagctg gaaggggctt aggtttgacc ctgactcaag acaaatgaac atatgaaaag 480 tatggggaga atgatctgtg tattgactgg tagggcctca tcagctattc cttctctccc 540 tgtcactgcc atctcgtgcc gaattcggca cgagctcgtg ccgaaaccct aaaccctaaa 600 cccctaaacc ctaaacccta aaccctaaac cctaaaccct aaaccctaaa ccctaaaccc 660 taaaccccta aacccctaaa ccctaaaccc taaaccctaa accctaaacc ctaaacccta 720 aaccctaacc ctaaccctaa ccctaaccct aacctagcct tcattgacgt ctatccccaa 780 tcttagaaga atcttcaaat cgattctaga ataactggaa acaattatca gaaattgtat 840 aactgcttat tagcttatta gcttattagt taggatgtat gcacattgat gacaactaga 900 tgcagcacca caatcactac cacgtaccaa tcatatacca ataatgtact aataatgtac 960 caataactat ggtttataaa gatggtgtca tttaaatcaa tattagttcc ttatattaca 1020 ctctttttaa tgagcggtgc tgtctttgca agtgataccg atcccgaagc tggtgggcct 1080 agtgaagctg gtgggcctag tggaactgtt gggcccagtg aagctggtgg gcctagtgaa 1140 gctggtgggc ctagtggaac tggttggcct agtgaagctg gtgggcctag tgaagctggt 1200 gggcctagtg aagctggtgg gcctagtgaa gctggtgggc ctagtggaac tggttggcct 1260 agtggaactg gttggcctag tgaagctggt tggtctagtg aacgatttgg atatcagctt 1320 cttccgtatt ctagaagaat agttatattt 1350 17 1820 DNA Babesia microti 17 ggaaagcctt aaacatgcat gggaataatg aaatagtaaa aattgcagcc atggcaatgt 60 aataatgagt ggatgtttca gtcttgaggc tctttaacaa gagtgttgtc ttgtagtcaa 120 agacaaagtg attcgtcatg ccgcattcgc agccaccatc atcatcaggc gacgacgggt 180 ctctttcatt atcctcgggc ttattattgc aaccatgaca cccttcttta caaaagtctt 240 tttttttcag cggtgtctga gtattatgcg attttattcc agccttccca cttttattct 300 tattgagatt gccatgctct tcttcatgag cgtcacttgt ttcctgcggt gtctgagtat 360 catacgattt tattccagca tttccacttt tattcttatt gattttgtca tgcccttctt 420 cacactcttc acatatttct tgcgttgtct gagtatcatg cgattttctt tcagccttct 480 cacttttatt cgtattgatt ttgtcatgcc cttcttcatg agcgtcactt gtttcctgcg 540 gtgtctgagt atcatacgat tttattccag catttccact tttattctta ttgattttgt 600 catgcccttc ttcacactct tcacatattt cttgcgttgt ctgagtatca tacgatttta 660 ttccagcatt tccactttta ttcttattga ttttgtcatg cccttcttca cactcttcac 720 atatttcttg cgttgtctga gtatcatgcg attttctttc agccttctca cttttattcg 780 tattgggttt gccatgccct tctttacgct cttcatatat ttcttgtgcc gttagtctca 840 gtaagttgtc aagctcttca tatatttctt gcggtgtctg agtatcatgc gattttcttt 900 cagtcttctc acttttattc gtattgagtt tgccattccc ttcttcatga tcgtcacttg 960 tttcttgcgc cgttagtctc attaagttgt caagctcttc atcatctatt gaatggtatg 1020 gagctgtatc ttcccagggt ggttgaatta tgtcattctc gccgatttta aatgatggtt 1080 cttcatcatt tatatcagat gccatgtctg agtggtgccc taatctagag aattggtgtg 1140 gtaccccctc atccaaactt tcgggcaaca ccctggtatc agaatccatt tgttcgagcg 1200 gctcactatc gcaagcgtct tgtggattga tgttatcatg ttcctggatt tcaacatgta 1260 cagattctga atccgcattg ggttctggaa tatagttggt aactacattt gtttctagag 1320 aagtatcatt cttatattaa ttcatctaag atctgtgctt ctttgtttct acacatacag 1380 ggtgtctctt ttcccaacat aatatctgta aattcttccc agaagcagaa ccttgttggt 1440 accagacagc atcgggtctc tgtgagtttc tattcaggca acaggtgtat tctgtttgcc 1500 agtccaagtg catcctgtat tctagtactg gcttactacc ccaagcaaat cactggcatc 1560 aacatctagc actgagtgaa gcatgatctc ttctacaagg tgtttttcca ttgtgttgta 1620 agcccgtata caaggctgtt cccactcaac aatgaagaga cctcttagca tgaatggcca 1680 gatgtctgtt ctttaaatta aatcaatatg ttttgctcaa tatgtcagac ttgtttgtgg 1740 tggagccaaa attggaggtc ccatcgagat ttggagaaac ttgaaatgaa tgcaaaagat 1800 ggtgggggct actcgtgccg 1820 18 263 PRT Babesia microti 18 Leu Phe Leu Met Ser Gly Ala Val Phe Ala Ser Asp Thr Asp Pro Glu 1 5 10 15 Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr Val Gly Pro 20 25 30 Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr Gly 35 40 45 Trp Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu 50 55 60 Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr Gly Trp Pro 65 70 75 80 Ser Gly Thr Gly Trp Pro Ser Glu Ala Gly Trp Ser Ser Glu Arg Phe 85 90 95 Gly Tyr Gln Leu Leu Pro Tyr Ser Arg Arg Ile Val Ile Phe Asn Glu 100 105 110 Val Cys Leu Ser Tyr Ile Tyr Lys His Ser Val Met Ile Leu Glu Arg 115 120 125 Asp Arg Val Asn Asp Gly His Lys Asp Tyr Ile Glu Glu Lys Thr Lys 130 135 140 Glu Lys Asn Lys Leu Lys Lys Glu Leu Glu Lys Cys Phe Pro Glu Gln 145 150 155 160 Tyr Ser Leu Met Lys Lys Glu Glu Leu Ala Arg Ile Phe Asp Asn Ala 165 170 175 Ser Thr Ile Ser Ser Lys Tyr Lys Leu Leu Val Asp Glu Ile Ser Asn 180 185 190 Lys Ala Tyr Gly Thr Leu Glu Gly Pro Ala Ala Asp Asn Phe Asp His 195 200 205 Phe Arg Asn Ile Trp Lys Ser Ile Val Leu Lys Asp Met Phe Ile Tyr 210 215 220 Cys Asp Leu Leu Leu Gln His Leu Ile Tyr Lys Phe Tyr Tyr Asp Asn 225 230 235 240 Thr Val Asn Asp Ile Lys Lys Asn Phe Asp Glu Ser Lys Ser Lys Ala 245 250 255 Leu Val Leu Arg Asp Lys Ile 260 19 310 PRT Babesia microti 19 Met Ser Gly Ala Val Phe Ala Ser Asp Thr Asp Pro Glu Ala Gly Gly 1 5 10 15 Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr Val Gly Pro Ser Glu Ala 20 25 30 Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr Val Gly Pro Ser 35 40 45 Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr Gly Trp 50 55 60 Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr 65 70 75 80 Val Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser 85 90 95 Gly Thr Gly Trp Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly 100 105 110 Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr 115 120 125 Gly Trp Pro Ser Gly Thr Gly Trp Pro Ser Glu Ala Gly Trp Ser Ser 130 135 140 Glu Arg Phe Gly Tyr Gln Leu Leu Pro Tyr Ser Arg Arg Ile Val Ile 145 150 155 160 Phe Asn Glu Val Cys Leu Ser Tyr Ile Tyr Lys His Ser Val Met Ile 165 170 175 Leu Glu Arg Asp Arg Val Asn Asp Gly His Lys Asp Tyr Ile Glu Glu 180 185 190 Lys Thr Lys Glu Lys Asn Lys Leu Lys Lys Glu Leu Glu Lys Cys Phe 195 200 205 Pro Glu Gln Tyr Ser Leu Met Lys Lys Glu Glu Leu Ala Arg Ile Phe 210 215 220 Asp Asn Ala Ser Thr Ile Ser Ser Lys Tyr Lys Leu Leu Val Asp Glu 225 230 235 240 Ile Ser Asn Lys Ala Tyr Gly Thr Leu Glu Gly Pro Ala Ala Asp Asn 245 250 255 Phe Asp His Phe Arg Asn Ile Trp Lys Ser Ile Val Leu Lys Asp Met 260 265 270 Phe Ile Tyr Cys Asp Leu Leu Leu Gln His Leu Ile Tyr Lys Phe Tyr 275 280 285 Tyr Asp Asn Thr Val Asn Asp Ile Lys Lys Asn Phe Asp Glu Ser Trp 290 295 300 Thr Gln Thr Leu Lys Glu 305 310 20 367 PRT Babesia microti 20 Leu Trp Phe Ile Lys Met Val Ser Phe Lys Ser Ile Leu Val Pro Tyr 1 5 10 15 Ile Thr Leu Phe Leu Met Ser Gly Ala Val Phe Ala Ser Asp Thr Asp 20 25 30 Pro Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr Val 35 40 45 Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Gly 50 55 60 Thr Gly Trp Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro 65 70 75 80 Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr Gly 85 90 95 Trp Pro Ser Gly Thr Gly Trp Pro Ser Glu Ala Gly Trp Ser Ser Glu 100 105 110 Arg Phe Gly Tyr Gln Leu Leu Pro Tyr Ser Arg Arg Ile Val Ile Phe 115 120 125 Asn Glu Val Cys Leu Ser Tyr Ile Tyr Lys His Ser Val Met Ile Leu 130 135 140 Glu Arg Asp Arg Val Asn Asp Gly His Lys Asp Tyr Ile Glu Glu Lys 145 150 155 160 Thr Lys Glu Lys Asn Lys Leu Lys Lys Glu Leu Glu Lys Cys Phe Pro 165 170 175 Glu Gln Tyr Ser Leu Met Lys Lys Glu Glu Leu Ala Arg Ile Phe Asp 180 185 190 Asn Ala Ser Thr Ile Ser Ser Lys Tyr Lys Leu Leu Val Asp Glu Ile 195 200 205 Ser Asn Lys Ala Tyr Gly Thr Leu Glu Gly Pro Ala Ala Asp Asn Phe 210 215 220 Asp His Phe Arg Asn Ile Trp Lys Ser Ile Val Leu Lys Asp Met Phe 225 230 235 240 Ile Tyr Cys Asp Leu Leu Leu Gln His Leu Ile Tyr Lys Phe Tyr Tyr 245 250 255 Asp Asn Thr Val Asn Asp Ile Lys Lys Asn Phe Asp Glu Ser Lys Ser 260 265 270 Lys Ala Leu Val Leu Arg Asp Lys Ile Thr Lys Lys Asp Gly Asp Tyr 275 280 285 Asn Thr His Phe Glu Asp Met Ile Lys Glu Leu Asn Ser Ala Ala Glu 290 295 300 Glu Phe Asn Lys Ile Val Asp Ile Met Ile Ser Asn Ile Gly Asp Tyr 305 310 315 320 Asp Glu Tyr Asp Ser Ile Ala Ser Phe Lys Pro Phe Leu Ser Met Ile 325 330 335 Thr Glu Ile Thr Lys Ile Thr Lys Val Ser Asn Val Ile Ile Pro Gly 340 345 350 Ile Lys Ala Leu Thr Leu Thr Val Phe Leu Ile Phe Ile Thr Lys 355 360 365 21 492 PRT Babesia microti 21 Met Tyr Lys Ile Lys Ile Ser Asp Tyr Ile Ile Glu Phe Asp Asp Asn 1 5 10 15 Ala Lys Leu Pro Thr Asp Asn Val Ile Gly Ile Ser Ile Tyr Thr Cys 20 25 30 Glu His Asn Asn Pro Val Leu Ile Glu Phe Tyr Val Ser Lys Lys Gly 35 40 45 Ser Ile Cys Tyr Tyr Phe Tyr Ser Met Asn Asn Asp Thr Asn Lys Trp 50 55 60 Asn Asn His Lys Ile Lys Tyr Asp Lys Arg Phe Asn Glu His Thr Asp 65 70 75 80 Met Asn Gly Ile His Tyr Tyr Tyr Ile Asp Gly Ser Leu Leu Ala Ser 85 90 95 Gly Glu Val Thr Ser Asn Phe Arg Tyr Ile Ser Lys Glu Tyr Glu Tyr 100 105 110 Glu His Thr Glu Leu Ala Lys Glu His Cys Lys Lys Glu Lys Cys Val 115 120 125 Asn Val Asp Asn Ile Glu Asp Asn Asn Leu Lys Ile Tyr Ala Lys Gln 130 135 140 Phe Lys Ser Val Val Thr Thr Pro Ala Asp Val Ala Gly Val Ser Asp 145 150 155 160 Gly Phe Phe Ile Arg Gly Gln Asn Leu Gly Ala Val Gly Ser Val Asn 165 170 175 Glu Gln Pro Asn Thr Val Gly Met Ser Leu Glu Gln Phe Ile Lys Asn 180 185 190 Glu Leu Tyr Ser Phe Ser Asn Glu Ile Tyr His Thr Ile Ser Ser Gln 195 200 205 Ile Ser Asn Ser Phe Leu Ile Met Met Ser Asp Ala Ile Val Lys His 210 215 220 Asp Asn Tyr Ile Leu Lys Lys Glu Gly Glu Gly Cys Glu Gln Ile Tyr 225 230 235 240 Asn Tyr Glu Glu Phe Ile Glu Lys Leu Arg Gly Ala Arg Ser Glu Gly 245 250 255 Asn Asn Met Phe Gln Glu Ala Leu Ile Arg Phe Arg Asn Ala Ser Ser 260 265 270 Glu Glu Met Val Asn Ala Ala Ser Tyr Leu Ser Ala Ala Leu Phe Arg 275 280 285 Tyr Lys Glu Phe Asp Asp Glu Leu Phe Lys Lys Ala Asn Asp Asn Phe 290 295 300 Gly Arg Asp Asp Gly Tyr Asp Phe Asp Tyr Ile Asn Thr Lys Lys Glu 305 310 315 320 Leu Val Ile Leu Ala Ser Val Leu Asp Gly Leu Asp Leu Ile Met Glu 325 330 335 Arg Leu Ile Glu Asn Phe Ser Asp Val Asn Asn Thr Asp Asp Ile Lys 340 345 350 Lys Ala Phe Asp Glu Cys Lys Ser Asn Ala Ile Ile Leu Lys Lys Lys 355 360 365 Ile Leu Asp Asn Asp Glu Asp Tyr Lys Ile Asn Phe Arg Glu Met Val 370 375 380 Asn Glu Val Thr Cys Ala Asn Thr Lys Phe Glu Ala Leu Asn Asp Leu 385 390 395 400 Ile Ile Ser Asp Cys Glu Lys Lys Gly Ile Lys Ile Asn Arg Asp Val 405 410 415 Ile Ser Ser Tyr Lys Leu Leu Leu Ser Thr Ile Thr Tyr Ile Val Gly 420 425 430 Ala Gly Val Glu Ala Val Thr Val Ser Val Ser Ala Thr Ser Asn Gly 435 440 445 Thr Glu Ser Gly Gly Ala Gly Ser Gly Thr Gly Thr Ser Val Ser Ala 450 455 460 Thr Ser Thr Leu Thr Gly Asn Gly Gly Thr Glu Ser Gly Gly Thr Ala 465 470 475 480 Gly Thr Thr Thr Ser Ser Gly Thr Trp Phe Gly Lys 485 490 22 138 PRT Babesia microti 22 Ser Leu Gly Gln Pro Ala Ser Leu Gly Gln Pro Ala Ser Leu Gly Gln 1 5 10 15 Pro Ala Ser Leu Gly Gln Pro Ala Ser Leu Gly Gln Pro Ala Ser Leu 20 25 30 Gly Gln Pro Val Pro Leu Gly Pro Pro Ala Ser Leu Gly Pro Pro Ala 35 40 45 Ser Leu Gly Pro Pro Ala Ser Leu Gly Gln Pro Val Pro Leu Gly Pro 50 55 60 Pro Ala Ser Leu Gly Pro Pro Ala Ser Leu Gly Pro Pro Ala Ser Leu 65 70 75 80 Gly Pro Pro Ala Ser Leu Gly Pro Pro Ala Ser Leu Gly Pro Pro Ala 85 90 95 Ser Leu Gly Pro Pro Ala Ser Leu Gly Pro Pro Ala Ser Leu Gly Pro 100 105 110 Thr Val Pro Leu Gly Pro Pro Ala Ser Arg Ser Val Ser Pro Ala Lys 115 120 125 Thr Ala Pro Leu Ile Lys Lys Ser Val Ile 130 135 23 303 PRT Babesia microti 23 Leu Trp Phe Ile Lys Met Val Ser Phe Lys Ser Ile Leu Val Pro Tyr 1 5 10 15 Ile Thr Leu Phe Leu Met Ser Gly Ala Val Phe Ala Gly Asp Thr Asp 20 25 30 Arg Glu Ala Gly Gly Pro Ser Gly Thr Val Gly Pro Ser Glu Ala Gly 35 40 45 Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu 50 55 60 Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro 65 70 75 80 Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr Gly 85 90 95 Trp Pro Ser Glu Ala Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser Glu 100 105 110 Ala Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser Glu Ala Gly Trp Pro 115 120 125 Ser Glu Arg Phe Gly Tyr Gln Leu Leu Trp Tyr Ser Arg Arg Ile Val 130 135 140 Ile Phe Asn Glu Ile Tyr Leu Ser His Ile Tyr Glu His Ser Val Met 145 150 155 160 Ile Leu Glu Arg Asp Arg Val Asn Asp Gly His Lys Asp Tyr Ile Glu 165 170 175 Glu Lys Thr Lys Glu Lys Asn Lys Leu Lys Lys Glu Leu Glu Lys Cys 180 185 190 Phe Pro Glu Gln Tyr Ser Leu Met Lys Lys Glu Glu Leu Ala Arg Ile 195 200 205 Ile Asp Asn Ala Ser Thr Ile Ser Ser Lys Tyr Lys Leu Leu Val Asp 210 215 220 Glu Ile Ser Asn Lys Ala Tyr Gly Thr Leu Glu Gly Pro Ala Ala Asp 225 230 235 240 Asp Phe Asp His Phe Arg Asn Ile Trp Lys Ser Ile Val Pro Lys Asn 245 250 255 Met Phe Leu Tyr Cys Asp Leu Leu Leu Lys His Leu Ile Arg Lys Phe 260 265 270 Tyr Cys Asp Asn Thr Ile Asn Asp Ile Lys Lys Asn Phe Asp Asp Ile 275 280 285 Glu Lys Leu Gly Cys Phe Gln Ala Arg Ser Phe Leu Pro Val Asn 290 295 300 24 592 PRT Babesia microti 24 Met Met Lys Phe Asn Ile Asp Lys Ile Ile Leu Ile Asn Leu Ile Val 1 5 10 15 Leu Leu Asn Arg Asn Val Val Tyr Cys Val Asp Thr Asn Asn Ser Ser 20 25 30 Leu Ile Glu Ser Gln Pro Val Thr Thr Asn Ile Asp Thr Asp Asn Thr 35 40 45 Ile Thr Thr Asn Lys Tyr Thr Gly Thr Ile Ile Asn Ala Asn Ile Val 50 55 60 Glu Tyr Arg Glu Phe Glu Asp Glu Pro Leu Thr Ile Gly Phe Arg Tyr 65 70 75 80 Thr Ile Asp Lys Ser Gln Gln Asn Lys Leu Ser His Pro Asn Lys Ile 85 90 95 Asp Lys Ile Lys Phe Ser Asp Tyr Ile Ile Glu Phe Asp Asp Asn Ala 100 105 110 Lys Leu Pro Thr Asp Asn Val Ile Cys Ile Ser Ile Tyr Thr Cys Lys 115 120 125 His Asn Asn Pro Val Leu Ile Arg Phe Ser Cys Ser Ile Glu Lys Tyr 130 135 140 Tyr Tyr His Tyr Phe Tyr Ser Met Asn Asn Asp Thr Asn Lys Trp Asn 145 150 155 160 Asn His Lys Leu Lys Tyr Asp Lys Thr Tyr Asn Glu Tyr Thr Asp Asn 165 170 175 Asn Gly Val Asn Tyr Tyr Lys Ile Tyr Tyr Ser Asp Lys Gln Asn Ser 180 185 190 Pro Thr Asn Gly Asn Glu Tyr Glu Asp Val Ala Leu Ala Arg Ile His 195 200 205 Cys Asn Glu Glu Arg Cys Ala Asn Val Lys Val Asp Lys Ile Lys Tyr 210 215 220 Lys Asn Leu Glu Ile Tyr Val Lys Gln Leu Gly Thr Ile Ile Asn Ala 225 230 235 240 Asn Ile Val Glu Tyr Leu Val Phe Glu Asp Glu Pro Leu Thr Ile Gly 245 250 255 Phe Arg Tyr Thr Ile Asp Lys Ser Gln Gln Asn Glu Leu Ser His Pro 260 265 270 Asn Lys Ile Tyr Lys Ile Lys Phe Ser Asp Tyr Ile Ile Glu Phe Asp 275 280 285 Asp Asp Ala Lys Leu Thr Thr Ile Gly Thr Val Glu Asp Ile Thr Ile 290 295 300 Tyr Thr Cys Lys His Asn Asn Pro Val Leu Ile Arg Phe Ser Cys Ser 305 310 315 320 Ile Glu Lys Tyr Tyr Tyr Tyr Tyr Phe Tyr Ser Met Asn Asn Asn Thr 325 330 335 Asn Lys Trp Asn Asn His Asn Leu Lys Tyr Asp Asn Arg Phe Lys Glu 340 345 350 His Ser Asp Lys Asn Gly Ile Asn Tyr Tyr Glu Ile Ser Ala Phe Lys 355 360 365 Trp Ser Phe Ser Cys Phe Phe Val Asn Lys Tyr Glu His Lys Glu Leu 370 375 380 Ala Arg Ile His Cys Asn Glu Glu Arg Cys Ala Asn Val Lys Val Asp 385 390 395 400 Lys Ile Lys Tyr Lys Asn Leu Glu Ile Tyr Val Lys Gln Leu Gly Thr 405 410 415 Ile Ile Asn Ala Asn Ile Val Glu Tyr Leu Val Phe Glu Asp Glu Pro 420 425 430 Leu Thr Ile Gly Phe Arg Tyr Thr Ile Asp Lys Ser Gln Gln Asn Glu 435 440 445 Leu Ser His Pro Asn Lys Ile Tyr Lys Ile Lys Phe Ser Asp Tyr Ile 450 455 460 Ile Glu Phe Asp Asp Asp Ala Lys Leu Thr Thr Ile Gly Thr Val Glu 465 470 475 480 Asp Ile Thr Ile Tyr Thr Cys Lys His Asn Asn Pro Val Leu Ile Arg 485 490 495 Phe Ser Cys Ser Ile Glu Lys Tyr Tyr Tyr Tyr Tyr Phe Tyr Ser Met 500 505 510 Asn Asn Asn Thr Asn Lys Trp Asn Asn His Asn Leu Lys Tyr Asp Asn 515 520 525 Arg Phe Lys Glu His Ser Asp Lys Asn Gly Ile Asn Tyr Tyr Glu Ile 530 535 540 Ser Ala Phe Lys Trp Ser Phe Ser Cys Phe Phe Val Asn Lys Tyr Glu 545 550 555 560 His Lys Glu Leu Ala Arg Ile His Cys Asn Glu Glu Lys Cys Val Asn 565 570 575 Val Lys Val Asp Asn Ile Gly Asn Lys Asn Leu Glu Ile Tyr Val Lys 580 585 590 25 463 PRT Babesia microti 25 Ile Ile Met Lys Ile Asn Ile Asp Asn Ile Ile Leu Ile Asn Leu Ile 1 5 10 15 Ile Leu Leu Asn Arg Asn Val Val Tyr Cys Val Asp Lys Asn Asp Val 20 25 30 Ser Leu Trp Lys Ser Lys Pro Ile Thr Thr Val Ser Thr Thr Asn Asp 35 40 45 Thr Ile Thr Asn Lys Tyr Thr Ser Thr Val Ile Asn Ala Asn Phe Ala 50 55 60 Ser Tyr Arg Glu Phe Glu Asp Arg Glu Pro Leu Thr Ile Gly Phe Glu 65 70 75 80 Tyr Met Ile Asp Lys Ser Gln Gln Asp Lys Leu Ser His Pro Asn Lys 85 90 95 Ile Asp Lys Ile Lys Ile Ser Asp Tyr Ile Ile Glu Phe Asp Asp Asn 100 105 110 Ala Lys Leu Pro Thr Gly Ser Val Asn Asp Ile Ser Ile Ile Thr Cys 115 120 125 Lys His Asn Asn Pro Val Leu Ile Arg Phe Ser Cys Leu Ile Glu Gly 130 135 140 Ser Ile Cys Tyr Tyr Phe Tyr Leu Leu Asn Asn Asp Thr Asn Lys Trp 145 150 155 160 Asn Asn His Lys Leu Lys Tyr Asp Lys Thr Tyr Asn Glu His Thr Asp 165 170 175 Asn Asn Gly Ile Asn Tyr Tyr Lys Ile Asp Tyr Ser Glu Ser Thr Glu 180 185 190 Pro Thr Thr Glu Ser Thr Thr Cys Phe Cys Phe Arg Lys Lys Asn His 195 200 205 Lys Ser Glu Arg Lys Glu Leu Glu Asn Tyr Lys Tyr Glu Gly Thr Glu 210 215 220 Leu Ala Arg Ile His Cys Asn Lys Gly Lys Cys Val Lys Leu Gly Asp 225 230 235 240 Ile Lys Ile Lys Asp Lys Asn Leu Glu Ile Tyr Val Lys Gln Leu Met 245 250 255 Ser Val Asn Thr Pro Val Asn Phe Asp Asn Pro Thr Ser Ile Asn Leu 260 265 270 Pro Thr Val Ser Thr Thr Asn Asp Thr Ile Thr Asn Lys Tyr Thr Gly 275 280 285 Thr Ile Ile Asn Ala Asn Ile Val Glu Tyr Cys Glu Phe Glu Asp Glu 290 295 300 Pro Leu Thr Ile Gly Phe Arg Tyr Thr Ile Asp Lys Ser Gln Gln Asn 305 310 315 320 Lys Leu Ser His Pro Asn Lys Ile Asp Lys Ile Lys Phe Phe Asp Tyr 325 330 335 Ile Ile Glu Phe Asp Asp Asp Val Lys Leu Pro Thr Ile Gly Thr Val 340 345 350 Asn Ile Ile Tyr Ile Tyr Thr Cys Glu His Asn Asn Pro Val Leu Val 355 360 365 Glu Phe Ile Val Ser Ile Glu Glu Ser Tyr Tyr Phe Tyr Phe Tyr Ser 370 375 380 Met Asn Asn Asn Thr Asn Lys Trp Asn Asn His Lys Leu Lys Tyr Asp 385 390 395 400 Lys Arg Phe Lys Lys Tyr Thr Lys Asn Gly Ile Asn Cys Tyr Glu Tyr 405 410 415 Val Leu Arg Lys Cys Ser Ser Tyr Thr Arg Lys Asn Glu Tyr Glu His 420 425 430 Lys Glu Leu Ala Arg Ile His Cys Asn Glu Glu Lys Cys Val Asn Val 435 440 445 Lys Val Asp Asn Ile Glu Lys Lys Asn Leu Glu Ile Tyr Val Lys 450 455 460 26 297 PRT Babesia microti 26 Arg Ala Ala Arg Ala Asp Tyr Tyr Lys Tyr Leu Val Asp Glu Tyr Ser 1 5 10 15 Ser Pro Arg Glu Glu Arg Glu Leu Ala Arg Val His Cys Asn Glu Glu 20 25 30 Lys Cys Val Lys Leu Asp Gly Ile Lys Phe Lys Asp Lys Asn Leu Glu 35 40 45 Ile Tyr Val Lys Gln Leu Met Ser Val Asn Thr Pro Val Val Phe Asp 50 55 60 Asn Asn Thr Leu Ile Asn Pro Thr Ser Ser Ser Gly Ala Thr Asp Asp 65 70 75 80 Ile Thr Tyr Glu Leu Ser Val Glu Ser Gln Pro Val Pro Thr Asn Ile 85 90 95 Asp Thr Gly Asn Asn Ile Thr Thr Asn Thr Ser Asn Asn Asn Leu Ile 100 105 110 Lys Ala Lys Phe Leu Tyr Asn Phe Asn Leu Pro Gly Lys Pro Ser Thr 115 120 125 Gly Leu Phe Glu Tyr Thr Ile Asp Lys Ser Glu Gln Asn Lys Leu Ser 130 135 140 His Pro Asn Lys Ile Asp Lys Ile Lys Phe Ser Asp Tyr Ile Ile Glu 145 150 155 160 Phe Asp Asp Asp Ala Lys Leu Pro Thr Ile Gly Thr Val Asn Ile Ile 165 170 175 Ser Ile Ile Thr Cys Lys His Asn Asn Pro Val Leu Val Glu Phe Ile 180 185 190 Val Ser Thr Glu Ile Tyr Cys Tyr Tyr Asn Tyr Phe Tyr Ser Met Asn 195 200 205 Asn Asn Thr Asn Lys Trp Asn Asn His Lys Leu Lys Tyr Asp Lys Arg 210 215 220 Tyr Lys Glu Glu Tyr Thr Asp Asp Asn Gly Ile Asn Tyr Tyr Lys Leu 225 230 235 240 Asn Asp Ser Glu Pro Thr Glu Ser Thr Glu Ser Thr Thr Cys Phe Cys 245 250 255 Phe Arg Lys Lys Asn His Lys Tyr Glu Asn Glu Arg Thr Ala Leu Ala 260 265 270 Lys Glu His Cys Asn Glu Glu Arg Cys Val Lys Val Asp Asn Ile Lys 275 280 285 Asp Asn Asn Leu Glu Ile Tyr Leu Lys 290 295 27 121 PRT Babesia microti 27 Leu Trp Phe Ile Lys Met Val Ser Phe Lys Ser Ile Leu Val Pro Tyr 1 5 10 15 Ile Thr Leu Phe Leu Met Ser Gly Ala Val Phe Ala Ser Asp Thr Asp 20 25 30 Pro Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly 35 40 45 Gly Pro Ser Gly Thr Val Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu 50 55 60 Ala Gly Gly Pro Ser Gly Thr Gly Trp Pro Ser Glu Ala Gly Gly Pro 65 70 75 80 Ser Glu Ala Gly Gly Pro Ser Gly Thr Gly Trp Pro Ser Glu Ala Gly 85 90 95 Trp Ser Ser Glu Arg Phe Gly Tyr Gln Leu Leu Pro Tyr Ser Arg Arg 100 105 110 Ile Val Thr Phe Asn Glu Val Cys Leu 115 120 28 267 PRT Babesia microti 28 Leu Trp Phe Ile Lys Met Val Ser Phe Lys Ser Ile Leu Val Pro Tyr 1 5 10 15 Ile Thr Leu Phe Leu Met Ser Gly Ala Val Phe Ala Ser Asp Thr Asp 20 25 30 Pro Glu Ala Gly Gly Pro Ser Gly Thr Val Gly Pro Ser Glu Ala Gly 35 40 45 Gly Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr Gly Trp Pro Ser Glu 50 55 60 Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr Gly Trp Pro 65 70 75 80 Ser Glu Ala Gly Trp Ser Ser Glu Arg Phe Gly Tyr Gln Leu Leu Pro 85 90 95 Tyr Ser Arg Arg Ile Val Thr Phe Asn Glu Val Cys Leu Ser Tyr Ile 100 105 110 Tyr Lys His Ser Val Met Ile Leu Glu Arg Asp Arg Val Asn Asp Gly 115 120 125 His Lys Asp Tyr Ile Glu Glu Lys Thr Lys Glu Lys Asn Lys Leu Lys 130 135 140 Lys Glu Leu Glu Lys Cys Phe Pro Glu Gln Tyr Ser Leu Met Lys Lys 145 150 155 160 Glu Glu Leu Ala Arg Ile Phe Asp Asn Ala Ser Thr Ile Ser Ser Lys 165 170 175 Tyr Lys Leu Leu Val Asp Glu Ile Ser Asn Lys Ala Tyr Gly Thr Leu 180 185 190 Glu Gly Pro Ala Ala Asp Asn Phe Asp His Phe Arg Asn Ile Trp Lys 195 200 205 Ser Ile Val Leu Lys Asp Met Phe Ile Tyr Cys Asp Leu Leu Leu Gln 210 215 220 His Leu Ile Tyr Lys Phe Tyr Tyr Asp Asn Thr Ile Asn Asp Ile Lys 225 230 235 240 Lys Asn Phe Asp Glu Ser Lys Ser Lys Ala Leu Val Leu Arg Asp Lys 245 250 255 Ile Thr Lys Lys Asp Val Tyr Val Asn Asp His 260 265 29 16 PRT Babesia microti 29 Ala Trp Thr Phe Ser Val Leu Glu Leu Gln Glu Phe Ser Tyr Thr Val 1 5 10 15 30 465 PRT Babesia microti 30 Met Leu Thr Phe Gly Asn Ile Arg Phe His Asn Ile Asn Leu Pro Pro 1 5 10 15 Phe Ser Leu Gly Ile Ile His Ser Ile Thr Val Glu Lys Ala Ile Asn 20 25 30 Ser Glu Asp Phe Asp Gly Ile Gln Thr Leu Leu Gln Val Ser Ile Ile 35 40 45 Ala Ser Tyr Gly Pro Ser Gly Asp Tyr Ser Ser Phe Val Phe Thr Pro 50 55 60 Val Val Thr Ala Asp Thr Asn Val Phe Tyr Lys Leu Glu Thr Asp Phe 65 70 75 80 Lys Leu Asp Val Asp Val Ile Thr Lys Thr Ser Leu Glu Leu Pro Thr 85 90 95 Ser Val Pro Gly Phe His Tyr Thr Glu Thr Ile Tyr Gln Gly Thr Glu 100 105 110 Leu Ser Lys Phe Ser Lys Pro Gln Cys Lys Leu Asn Asp Pro Pro Ile 115 120 125 Thr Thr Gly Ser Gly Leu Gln Ile Ile His Asp Gly Leu Asn Asn Ser 130 135 140 Thr Ile Ile Thr Asn Lys Glu Val Asn Val Asp Gly Thr Asp Leu Val 145 150 155 160 Phe Phe Glu Leu Leu Pro Pro Ser Asp Gly Ile Pro Thr Leu Arg Ser 165 170 175 Lys Leu Phe Pro Val Leu Lys Ser Ile Pro Met Ile Ser Thr Gly Val 180 185 190 Asn Glu Leu Leu Leu Glu Val Leu Glu Asn Pro Ser Phe Pro Ser Ala 195 200 205 Ile Ser Asn Tyr Thr Gly Leu Thr Gly Arg Leu Asn Lys Leu Leu Thr 210 215 220 Val Leu Asp Gly Ile Val Asp Ser Ala Ile Ser Val Lys Thr Thr Glu 225 230 235 240 Thr Val Pro Asp Asp Ala Glu Thr Ser Ile Ser Ser Leu Lys Ser Leu 245 250 255 Ile Lys Ala Ile Arg Asp Asn Ile Thr Thr Thr Arg Asn Glu Val Thr 260 265 270 Lys Asp Asp Val Tyr Ala Leu Lys Lys Ala Leu Thr Cys Leu Thr Thr 275 280 285 His Leu Ile Tyr His Ser Lys Val Asp Gly Ile Ser Phe Asp Met Leu 290 295 300 Gly Thr Gln Lys Asn Lys Ser Ser Pro Leu Gly Lys Ile Gly Thr Ser 305 310 315 320 Met Asp Asp Ile Ile Ala Met Phe Ser Asn Pro Asn Met Tyr Leu Val 325 330 335 Lys Val Ala Tyr Leu Gln Ala Ile Glu His Ile Phe Leu Ile Ser Thr 340 345 350 Lys Tyr Asn Asp Ile Phe Asp Tyr Thr Ile Asp Phe Ser Lys Arg Glu 355 360 365 Ala Thr Asp Ser Gly Ser Phe Thr Asp Ile Leu Leu Gly Asn Lys Val 370 375 380 Lys Glu Ser Leu Ser Phe Ile Glu Gly Leu Ile Ser Asp Ile Lys Ser 385 390 395 400 His Ser Leu Lys Ala Gly Val Thr Gly Gly Ile Ser Ser Ser Ser Leu 405 410 415 Phe Asp Glu Ile Phe Asp Glu Leu Asn Leu Asp Gln Ala Thr Ile Arg 420 425 430 Thr Leu Val Ala Pro Leu Asp Trp Pro Leu Ile Ser Asp Lys Ser Leu 435 440 445 His Pro Ser Leu Lys Met Val Val Val Leu Pro Gly Phe Phe Ile Val 450 455 460 Pro 465 31 128 PRT Babesia microti 31 Leu Trp Phe Ile Lys Met Val Ser Phe Lys Ser Ile Leu Val Pro Tyr 1 5 10 15 Ile Thr Leu Phe Leu Met Ser Gly Ala Val Phe Ala Ser Asp Thr Asp 20 25 30 Pro Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr Val 35 40 45 Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Gly 50 55 60 Thr Gly Trp Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro 65 70 75 80 Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr Gly 85 90 95 Trp Pro Ser Gly Thr Gly Trp Pro Ser Glu Ala Gly Trp Ser Ser Glu 100 105 110 Arg Phe Gly Tyr Gln Leu Leu Pro Tyr Ser Arg Arg Ile Val Ile Phe 115 120 125 32 245 PRT Babesia microti 32 Gln Glu Cys Cys Leu Val Val Lys Asp Lys Val Ile Arg His Ala Ala 1 5 10 15 Phe Ala Ala Thr Ile Ile Ile Arg Arg Arg Arg Val Ser Phe Ile Ile 20 25 30 Leu Gly Leu Ile Ile Ala Thr Met Thr Pro Phe Phe Thr Lys Val Phe 35 40 45 Phe Phe Gln Arg Cys Leu Ser Ile Met Arg Phe Tyr Ser Ser Leu Pro 50 55 60 Thr Phe Ile Leu Ile Glu Ile Ala Met Leu Phe Phe Met Ser Val Thr 65 70 75 80 Cys Phe Leu Arg Cys Leu Ser Ile Ile Arg Phe Tyr Ser Ser Ile Ser 85 90 95 Thr Phe Ile Leu Ile Asp Phe Val Met Pro Phe Phe Thr Leu Phe Thr 100 105 110 Tyr Phe Leu Arg Cys Leu Ser Ile Met Arg Phe Ser Phe Ser Leu Leu 115 120 125 Thr Phe Ile Arg Ile Asp Phe Val Met Pro Phe Phe Met Ser Val Thr 130 135 140 Cys Phe Leu Arg Cys Leu Ser Ile Ile Arg Phe Tyr Ser Ser Ile Ser 145 150 155 160 Thr Phe Ile Leu Ile Asp Phe Val Met Pro Phe Phe Thr Leu Phe Thr 165 170 175 Tyr Phe Leu Arg Cys Leu Ser Ile Ile Arg Phe Tyr Ser Ser Ile Ser 180 185 190 Thr Phe Ile Leu Ile Asp Phe Val Met Pro Phe Phe Thr Leu Phe Thr 195 200 205 Tyr Phe Leu Arg Cys Leu Ser Ile Met Arg Phe Ser Phe Ser Leu Leu 210 215 220 Thr Phe Ile Arg Ile Gly Phe Ala Met Pro Phe Phe Thr Leu Phe Ile 225 230 235 240 Tyr Phe Leu Cys Arg 245 33 293 PRT Babesia microti 33 Thr Ala Phe Ala Ala Phe Leu Ala Phe Gly Asn Ile Ser Pro Val Leu 1 5 10 15 Ser Ala Gly Gly Ser Gly Gly Asn Gly Gly Asn Gly Gly Gly His Gln 20 25 30 Glu Gln Asn Asn Ala Asn Asp Ser Ser Asn Pro Thr Gly Ala Gly Gly 35 40 45 Gln Pro Asn Asn Glu Ser Lys Lys Lys Ala Val Lys Leu Asp Leu Asp 50 55 60 Leu Met Lys Glu Thr Lys Asn Val Cys Thr Thr Val Asn Thr Lys Leu 65 70 75 80 Val Gly Lys Ala Lys Ser Lys Leu Asn Lys Leu Glu Gly Glu Ser His 85 90 95 Lys Glu Tyr Val Ala Glu Lys Thr Lys Glu Ile Asp Glu Lys Asn Lys 100 105 110 Lys Phe Asn Glu Asn Leu Val Lys Ile Glu Lys Lys Lys Lys Ile Lys 115 120 125 Val Pro Ala Asp Thr Gly Ala Glu Val Asp Ala Val Asp Asp Gly Val 130 135 140 Ala Gly Ala Leu Ser Asp Leu Ser Ser Asp Ile Ser Ala Ile Lys Thr 145 150 155 160 Leu Thr Asp Asp Val Ser Glu Lys Val Ser Glu Asn Leu Lys Asp Asp 165 170 175 Glu Ala Ser Ala Thr Glu His Thr Asp Ile Lys Glu Lys Ala Thr Leu 180 185 190 Leu Gln Glu Ser Cys Asn Gly Ile Gly Thr Ile Leu Asp Lys Leu Ala 195 200 205 Glu Tyr Leu Asn Asn Asp Thr Thr Gln Asn Ile Lys Lys Glu Phe Asp 210 215 220 Glu Arg Lys Lys Asn Leu Thr Ser Leu Lys Thr Lys Val Glu Asn Lys 225 230 235 240 Asp Glu Asp Tyr Val Asp Val Thr Met Thr Ser Lys Thr Asp Leu Ile 245 250 255 Ile His Cys Leu Thr Cys Thr Asn Asp Ala His Gly Leu Phe Asp Phe 260 265 270 Glu Ser Lys Ser Leu Ile Lys Gln Thr Phe Lys Leu Arg Ser Lys Asp 275 280 285 Glu Gly Glu Leu Cys 290 34 431 PRT Babesia microti 34 Gly Pro Lys Met Lys Val Asn Ser Ala Asn Leu Asp Phe Arg Trp Ala 1 5 10 15 Met Tyr Met Leu Asn Ser Lys Ile His Leu Ile Glu Ser Ser Leu Ile 20 25 30 Asp Asn Phe Thr Leu Asp Asn Pro Ser Ala Tyr Glu Ile Leu Arg Val 35 40 45 Ser Tyr Asn Ser Asn Glu Phe Gln Val Gln Ser Pro Gln Asn Ile Asn 50 55 60 Asn Glu Met Glu Ser Ser Thr Pro Glu Ser Asn Ile Ile Trp Val Val 65 70 75 80 His Ser Asp Val Ile Met Lys Arg Phe Asn Cys Lys Asn Arg Lys Ser 85 90 95 Leu Ser Thr His Ser Leu Thr Glu Asn Asp Ile Leu Lys Phe Gly Arg 100 105 110 Ile Glu Leu Ser Val Lys Cys Ile Ile Met Gly Ala Gly Ile Thr Ala 115 120 125 Ser Asp Leu Asn Leu Lys Gly Leu Gly Phe Ile Ser Pro Asp Lys Gln 130 135 140 Ser Thr Asn Val Cys Asn Tyr Phe Glu Asp Met His Glu Ser Tyr His 145 150 155 160 Ile Leu Asp Thr Gln Arg Ala Ser Asp Cys Val Ser Asp Asp Gly Ala 165 170 175 Asp Ile Asp Ile Ser Asn Phe Asp Met Val Gln Asp Gly Asn Ile Asn 180 185 190 Ser Val Asp Ala Asp Ser Glu Thr Cys Met Ala Asn Ser Gly Val Thr 195 200 205 Val Asn Asn Thr Glu Asn Val Ser Asn Ser Glu Asn Phe Gly Lys Leu 210 215 220 Lys Ser Leu Val Ser Thr Thr Thr Pro Leu Cys Arg Ile Cys Leu Cys 225 230 235 240 Gly Glu Ser Asp Pro Gly Pro Leu Val Thr Pro Cys Asn Cys Lys Gly 245 250 255 Ser Leu Asn Tyr Val His Leu Glu Cys Leu Arg Thr Trp Ile Lys Gly 260 265 270 Arg Leu Ser Ile Val Lys Asp Asp Asp Ala Ser Phe Phe Trp Lys Glu 275 280 285 Leu Ser Cys Glu Leu Cys Gly Lys Pro Tyr Pro Ser Val Leu Gln Val 290 295 300 Asp Asp Thr Glu Thr Asn Leu Met Asp Ile Lys Lys Pro Asp Ala Pro 305 310 315 320 Tyr Val Val Leu Glu Met Arg Ser Asn Ser Gly Asp Gly Cys Phe Val 325 330 335 Val Ser Val Ala Lys Asn Lys Ala Ile Ile Gly Arg Gly His Glu Ser 340 345 350 Asp Val Arg Leu Ser Asp Ile Ser Val Ser Arg Met His Ala Ser Leu 355 360 365 Glu Leu Asp Gly Gly Lys Val Val Ile His Asp Gln Gln Ser Lys Phe 370 375 380 Gly Thr Leu Val Arg Ala Lys Ala Pro Phe Ser Met Pro Ile Lys Gly 385 390 395 400 Pro Ile Cys Leu Gln Val Ser Ile Phe Phe Leu Asn Leu Lys Ile Ser 405 410 415 Thr His Ser Leu Thr Met Glu Arg Gly Met Glu His Val Leu Leu 420 425 430 35 6 PRT Babesia microti VARIANT (1)...(1) Xaa = Glutamic Acid or Glycine 35 Xaa Xaa Xaa Xaa Xaa Ser 1 5 36 32 PRT Babesia microti VARIANT (6)...(6) Xaa = Methionine or Isoleucine 36 Arg Cys Leu Ser Ile Xaa Arg Phe Xaa Xaa Ser Xaa Xaa Thr Phe Ile 1 5 10 15 Xaa Ile Xaa Xaa Xaa Met Xaa Phe Phe Xaa Xaa Xaa Xaa Xaa Phe Leu 20 25 30 37 1820 DNA Babesia microti 37 cggcacgagt agcccccacc atcttttgca ttcatttcaa gtttctccaa atctcgatgg 60 gacctccaat tttggctcca ccacaaacaa gtctgacata ttgagcaaaa catattgatt 120 taatttaaag aacagacatc tggccattca tgctaagagg tctcttcatt gttgagtggg 180 aacagccttg tatacgggct tacaacacaa tggaaaaaca ccttgtagaa gagatcatgc 240 ttcactcagt gctagatgtt gatgccagtg atttgcttgg ggtagtaagc cagtactaga 300 atacaggatg cacttggact ggcaaacaga atacacctgt tgcctgaata gaaactcaca 360 gagacccgat gctgtctggt accaacaagg ttctgcttct gggaagaatt tacagatatt 420 atgttgggaa aagagacacc ctgtatgtgt agaaacaaag aagcacagat cttagatgaa 480 ttaatataag aatgatactt ctctagaaac aaatgtagtt accaactata ttccagaacc 540 caatgcggat tcagaatctg tacatgttga aatccaggaa catgataaca tcaatccaca 600 agacgcttgc gatagtgagc cgctcgaaca aatggattct gataccaggg tgttgcccga 660 aagtttggat gagggggtac cacaccaatt ctctagatta gggcaccact cagacatggc 720 atctgatata aatgatgaag aaccatcatt taaaatcggc gagaatgaca taattcaacc 780 accctgggaa gatacagctc cataccattc aatagatgat gaagagcttg acaacttaat 840 gagactaacg gcgcaagaaa caagtgacga tcatgaagaa gggaatggca aactcaatac 900 gaataaaagt gagaagactg aaagaaaatc gcatgatact cagacaccgc aagaaatata 960 tgaagagctt gacaacttac tgagactaac ggcacaagaa atatatgaag agcgtaaaga 1020 agggcatggc aaacccaata cgaataaaag tgagaaggct gaaagaaaat cgcatgatac 1080 tcagacaacg caagaaatat gtgaagagtg tgaagaaggg catgacaaaa tcaataagaa 1140 taaaagtgga aatgctggaa taaaatcgta tgatactcag acaacgcaag aaatatgtga 1200 agagtgtgaa gaagggcatg acaaaatcaa taagaataaa agtggaaatg ctggaataaa 1260 atcgtatgat actcagacac cgcaggaaac aagtgacgct catgaagaag ggcatgacaa 1320 aatcaatacg aataaaagtg agaaggctga aagaaaatcg catgatactc agacaacgca 1380 agaaatatgt gaagagtgtg aagaagggca tgacaaaatc aataagaata aaagtggaaa 1440 tgctggaata aaatcgtatg atactcagac accgcaggaa acaagtgacg ctcatgaaga 1500 agagcatggc aatctcaata agaataaaag tgggaaggct ggaataaaat cgcataatac 1560 tcagacaccg ctgaaaaaaa aagacttttg taaagaaggg tgtcatggtt gcaataataa 1620 gcccgaggat aatgaaagag acccgtcgtc gcctgatgat gatggtggct gcgaatgcgg 1680 catgacgaat cactttgtct ttgactacaa gacaacactc ttgttaaaga gcctcaagac 1740 tgaaacatcc actcattatt acattgccat ggctgcaatt tttactattt cattattccc 1800 atgcatgttt aaggctttcc 1820 38 445 PRT Babesia microti 38 Tyr Lys Asn Asp Thr Ser Leu Glu Thr Asn Val Val Thr Asn Tyr Ile 1 5 10 15 Pro Glu Pro Asn Ala Asp Ser Glu Ser Val His Val Glu Ile Gln Glu 20 25 30 His Asp Asn Ile Asn Pro Gln Asp Ala Cys Asp Ser Glu Pro Leu Glu 35 40 45 Gln Met Asp Ser Asp Thr Arg Val Leu Pro Glu Ser Leu Asp Glu Gly 50 55 60 Val Pro His Gln Phe Ser Arg Leu Gly His His Ser Asp Met Ala Ser 65 70 75 80 Asp Ile Asn Asp Glu Glu Pro Ser Phe Lys Ile Gly Glu Asn Asp Ile 85 90 95 Ile Gln Pro Pro Trp Glu Asp Thr Ala Pro Tyr His Ser Ile Asp Asp 100 105 110 Glu Glu Leu Asp Asn Leu Met Arg Leu Thr Ala Gln Glu Thr Ser Asp 115 120 125 Asp His Glu Glu Gly Asn Gly Lys Leu Asn Thr Asn Lys Ser Glu Lys 130 135 140 Thr Glu Arg Lys Ser His Asp Thr Gln Thr Pro Gln Glu Ile Tyr Glu 145 150 155 160 Glu Leu Asp Asn Leu Leu Arg Leu Thr Ala Gln Glu Ile Tyr Glu Glu 165 170 175 Arg Lys Glu Gly His Gly Lys Pro Asn Thr Asn Lys Ser Glu Lys Ala 180 185 190 Glu Arg Lys Ser His Asp Thr Gln Thr Thr Gln Glu Ile Cys Glu Glu 195 200 205 Cys Glu Glu Gly His Asp Lys Ile Asn Lys Asn Lys Ser Gly Asn Ala 210 215 220 Gly Ile Lys Ser Tyr Asp Thr Gln Thr Thr Gln Glu Ile Cys Glu Glu 225 230 235 240 Cys Glu Glu Gly His Asp Lys Ile Asn Lys Asn Lys Ser Gly Asn Ala 245 250 255 Gly Ile Lys Ser Tyr Asp Thr Gln Thr Pro Gln Glu Thr Ser Asp Ala 260 265 270 His Glu Glu Gly His Asp Lys Ile Asn Thr Asn Lys Ser Glu Lys Ala 275 280 285 Glu Arg Lys Ser His Asp Thr Gln Thr Thr Gln Glu Ile Cys Glu Glu 290 295 300 Cys Glu Glu Gly His Asp Lys Ile Asn Lys Asn Lys Ser Gly Asn Ala 305 310 315 320 Gly Ile Lys Ser Tyr Asp Thr Gln Thr Pro Gln Glu Thr Ser Asp Ala 325 330 335 His Glu Glu Glu His Gly Asn Leu Asn Lys Asn Lys Ser Gly Lys Ala 340 345 350 Gly Ile Lys Ser His Asn Thr Gln Thr Pro Leu Lys Lys Lys Asp Phe 355 360 365 Cys Lys Glu Gly Cys His Gly Cys Asn Asn Lys Pro Glu Asp Asn Glu 370 375 380 Arg Asp Pro Ser Ser Pro Asp Asp Asp Gly Gly Cys Glu Cys Gly Met 385 390 395 400 Thr Asn His Phe Val Phe Asp Tyr Lys Thr Thr Leu Leu Leu Lys Ser 405 410 415 Leu Lys Thr Glu Thr Ser Thr His Tyr Tyr Ile Ala Met Ala Ala Ile 420 425 430 Phe Thr Ile Ser Leu Phe Pro Cys Met Phe Lys Ala Phe 435 440 445 39 32 PRT Babesia microti VARIANT (3)...(3) Xaa = Glycine or Aspartic Acid 39 Gly His Xaa Lys Xaa Asn Xaa Asn Lys Ser Xaa Xaa Ala Xaa Xaa Lys 1 5 10 15 Ser Xaa Asp Thr Gln Thr Xaa Gln Glu Xaa Xaa Xaa Xaa Xaa Glu Glu 20 25 30 40 2430 DNA Babesia microti 40 tgtattgtgt agataaaaat gatgtttcat tatggaaatc aaaacctata acaactgtca 60 gtaccactaa tgatactatt acaaatacac acactactaa tgtaattaat gccaatctta 120 ttggccactt taattataag gatagggaac ctttaacaat agtatttgta tacatgatcg 180 atgaatcaga acaaaataaa ttatcacatc cgaataaaat tgataaaatc aaaatttctg 240 attatataat tgaatttgat gacaatgcta aattaccaac tggtagtgtt attgatttaa 300 acatctatac ttgcaaacat aataatccag tattaattga attttatgtt tctatagaag 360 gatctttctg ctattatttc tctcattgaa taatgataca aatgaatgga ataatcacaa 420 aataaaatat gataaaaaat ataaagaata tacggacatg aatggtattc attattatta 480 tattgatggt agtttacttg taagtggcga agttacatct aattttcgtt atatttctaa 540 agaatatgaa tatgagcata caggattagt aaaaaaatat tgtaatgaag aaagatgtgt 600 aaaattggat aacattaaga taaaggataa taatttggaa atttatgtga aataatttaa 660 tgaagtataa tattatttat aataattcaa agattaatat aatcaattat tataattaca 720 aaaataatta attgtagaat attatattat taatcaattc agattataaa tacatatttt 780 tacatacatt tcaatttaaa cattcaaatt aatgtcattt ttatctacat tattataatt 840 ataactataa tattcattaa atactattaa aaaaaatatc ctctacatta tattaattat 900 tatagtatgt cattatataa catattcaca acgtataaca aatcaatcat taacatatac 960 atatatgata tcattaataa tcaatattta attgatacaa taatcaatag tcatctgtaa 1020 tataatcatt gtatactaat ttattataaa ttattacaaa atacactctt ttacttcatt 1080 ttatttctgt taaatttcat attctaatat tatattcatc tttctcatgt tactttaatc 1140 tatttccata tttatcccaa tttcttcatt taagactgag atgttcgttc gttcatacat 1200 aaataatgtg taaattttgt aatatataat aatgtataca tctggtatta catctatttt 1260 gtaataaata ttaaaaaaac ggttaaagtt agtgccttaa ttccaggaat tattacatta 1320 gaaactttgg tgattttagt gatttcggtg atcattgaaa gaaatggttt gaaacttgca 1380 atactgtcat actcatcata atccccaatg ttggaaatca tgatgtcaac aattttatta 1440 aattcttctg ctgcactatt caactcctta atcatgtcct caaaatgagt gttataatct 1500 ccatcctttt tagtgatctt atccctcaaa actaaagctt tagatttgga ttcgtcaaaa 1560 tttttcttga tatcattaac ggtattgtca taatagaatt tatagattaa atgttgtaat 1620 aataagtcac aatatataaa catatcttta agtacaatag acttccatat attacggaaa 1680 tggtcaaaat tatcagcagc tggaccttcc aatgtaccat aggccttgtt tgatatttca 1740 tcaaccaata acttatattt tgaagagata gtggatgcat tatcaaatat tctagccaat 1800 tcttctttct tcataaggga atattgttca ggaaaacatt tttccaattc ttttttcaat 1860 ttattcttct ccttggtttt ttcttcaatg tagtctttat gaccatcgtt caccctatct 1920 cgttccaata tcataacact atgtttgtat atataagata aacaaacttc attaaatata 1980 actattcttc tagaatacgg aagaagctga tatccaaatc gttcactaga ccaaccagct 2040 tcactaggcc aaccagttcc actaggccaa ccagttccac taggcccacc agcttcacta 2100 ggcccaccag cttcactagg cccaccagct tcactaggcc caccagcttc actaggccaa 2160 ccagttccac taggcccacc agcttcacta ggcccaccag cttcactggg cccaacagtt 2220 ccactaggcc caccagcttc actaggccca ccagcttcgg gatcggtatc acttgcaaag 2280 acagcaccgc tcattaaaaa gagtgtaata taaggaacta atattgattt aaatgacacc 2340 atctttataa accatagtta ttggtacatt attagtacat tattggtata tgattggtac 2400 gtggtagtga ttgtggtgct gcatctagtt 2430 41 128 PRT Babesia microti 41 Tyr Cys Val Asp Lys Asn Asp Val Ser Leu Trp Lys Ser Lys Pro Ile 1 5 10 15 Thr Thr Val Ser Thr Thr Asn Asp Thr Ile Thr Asn Thr His Thr Thr 20 25 30 Asn Val Ile Asn Ala Asn Leu Ile Gly His Phe Asn Tyr Lys Asp Arg 35 40 45 Glu Pro Leu Thr Ile Val Phe Val Tyr Met Ile Asp Glu Ser Glu Gln 50 55 60 Asn Lys Leu Ser His Pro Asn Lys Ile Asp Lys Ile Lys Ile Ser Asp 65 70 75 80 Tyr Ile Ile Glu Phe Asp Asp Asn Ala Lys Leu Pro Thr Gly Ser Val 85 90 95 Ile Asp Leu Asn Ile Tyr Thr Cys Lys His Asn Asn Pro Val Leu Ile 100 105 110 Glu Phe Tyr Val Ser Ile Glu Gly Ser Phe Cys Tyr Tyr Phe Ser His 115 120 125 42 1271 DNA Babesia microti 42 tgagaaaacg catataattg taactacgcc agagaagttt gacgtagtta cacgtaaaac 60 aggcaatgag cccctgcttg agcggcttag attggttata attgatgaaa tacacctact 120 ccatgacact aggggtccag tgctggaggc tattgtggcc cgcctgagtc agaggcccga 180 acgcgtaagg ctagttggtc tatcggccac gcttccaaac tacgaagacg tggctagatt 240 tctcactgtt aatctagacc gagggctttt ctactttggc agccacttta ggcctgtgcc 300 cttggagcag gtgtattatg gcgtgaagga gaagaaggct atcaaacgtt tcaacgcaat 360 caacgaaatt ctctaccaag aggtgattaa cgatgtttct agctgccaaa ttcttgtttt 420 tgtgcattct agaaaggaaa cgtacaggac ggcaaaattt atcaaagaca cggccctttc 480 acgggacaac ttgggagcct aaaccctaaa ccctaaaccc taaaccctaa ccctaaaccc 540 taaaccctaa accctaaacc ctaaacccta accctaaccc taaccctaac cctaacctag 600 ccttcattga cgtctatccc caatcttaga aaaatcttca aatcgattct agaataactg 660 gaagcaatta tcagaaattg tataactgct tattagctta ttagcttatt agttaggatg 720 tatgcacatt gatgacaact agatgcagca ccacaatcac taccacgtac caatcatata 780 ccaataatgt actaataatg taccaataac tatggtttat aaagatggtg tcatttaaat 840 caatattagt tccttatatt acactctttt taatgagcgg tgctgtcttt gcaggtgata 900 ccgatcgcga agctggtggg cctagtggaa ctgttgggcc tagtgaagct ggtgggccta 960 gtgaagctgg tgggcctagt gaagctggtg ggcctagtga agctggtggg cctagtgaag 1020 ctggtgggcc tagtgaagct ggtgggccta gtgaagctgg tgggcctagt gaagctggtg 1080 ggcctagtgg aactggttgg cctagtgaag ctggtgggcc tagtgaagct ggtgggccta 1140 gtgaagctgg tgggcctagt ggaactggtt ggcctagtga agctggttgg cctagtgaag 1200 ctggttggcc tagtgaagct ggttggccta gtgaagctgg ttggcctagt gaagctggtt 1260 ggcctagtga a 1271 43 166 PRT Babesia microti 43 Glu Lys Thr His Ile Ile Val Thr Thr Pro Glu Lys Phe Asp Val Val 1 5 10 15 Thr Arg Lys Thr Gly Asn Glu Pro Leu Leu Glu Arg Leu Arg Leu Val 20 25 30 Ile Ile Asp Glu Ile His Leu Leu His Asp Thr Arg Gly Pro Val Leu 35 40 45 Glu Ala Ile Val Ala Arg Leu Ser Gln Arg Pro Glu Arg Val Arg Leu 50 55 60 Val Gly Leu Ser Ala Thr Leu Pro Asn Tyr Glu Asp Val Ala Arg Phe 65 70 75 80 Leu Thr Val Asn Leu Asp Arg Gly Leu Phe Tyr Phe Gly Ser His Phe 85 90 95 Arg Pro Val Pro Leu Glu Gln Val Tyr Tyr Gly Val Lys Glu Lys Lys 100 105 110 Ala Ile Lys Arg Phe Asn Ala Ile Asn Glu Ile Leu Tyr Gln Glu Val 115 120 125 Ile Asn Asp Val Ser Ser Cys Gln Ile Leu Val Phe Val His Ser Arg 130 135 140 Lys Glu Thr Tyr Arg Thr Ala Lys Phe Ile Lys Asp Thr Ala Leu Ser 145 150 155 160 Arg Asp Asn Leu Gly Ala 165 44 154 PRT Babesia microti 44 Leu Trp Phe Ile Lys Met Val Ser Phe Lys Ser Ile Leu Val Pro Tyr 1 5 10 15 Ile Thr Leu Phe Leu Met Ser Gly Ala Val Phe Ala Gly Asp Thr Asp 20 25 30 Arg Glu Ala Gly Gly Pro Ser Gly Thr Val Gly Pro Ser Glu Ala Gly 35 40 45 Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu 50 55 60 Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro 65 70 75 80 Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr Gly 85 90 95 Trp Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu 100 105 110 Ala Gly Gly Pro Ser Gly Thr Gly Trp Pro Ser Glu Ala Gly Trp Pro 115 120 125 Ser Glu Ala Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser Glu Ala Gly 130 135 140 Trp Pro Ser Glu Ala Gly Trp Pro Ser Glu 145 150 45 4223 DNA Babesia microti 45 ctcgtgcctt tctcaactga taacagctaa caaaaagtct cttatcttaa accatcctat 60 acctcgtatt ataatatgaa aagggccttt tctaaatctt tccccaaagt tctgctattt 120 aattaaaaaa aaaaaagact cattcaataa acgggtgggg cagaaagggt acctttccaa 180 gtgttcttcc atgacgaccc acaatgcaaa gttcttctta caaagaaaag agaaagatcc 240 actgagtgat aagtaaccca gctggggccg ggcggtggtg gcgcacacct ttaatcccag 300 cactcgggag gcagaggcag gcggatctct gtgagttcga gaccaggctg gaccgacagc 360 ctccaaaaca atacagagaa accctgtctc ataaaaaacc aaaaaaaaag taacccagct 420 ggatttggta actgtctcag aaacagacta tataaaacct catcacccta caacaagtag 480 gaagctagcg ctccccaccc catcccaaca cacacacaca cacacacaca cacacacaca 540 cacacacaca cacgcacaca cgcacgcacg cacacacgca cgcacgcaca cacgcacaca 600 cgcacgcaca cacgcacaca cgcacgcacg cacgcacgca cgcacgcacg cacgcccttc 660 tgtgtctgtt ctgttcaaga agggtaccac aaaaaagtac cttatggcca catcaatgac 720 aattattact gtatataaaa tgcccccatg gatggcattg tattgtcgaa attaaaggca 780 cccccgaaag aacagcacag aggggctacc accaattaac tcccaggagg aaataaagac 840 agaagtgtga aggagggaga gagggaggga ggaagggagg gagaaaagga gggaaaggaa 900 caaggagtaa cagggacaaa agcagcagat ggtgccaggc aggagtgtgc ctaccacacc 960 gggccttccc gttacttcat ttactctcct ttgcagcctg ggaataaaca agtcacgcgt 1020 cacccggtgt ctcaagctca gcatggcttg atctgagtgc ccgtgtatgt gttcattcta 1080 taactgattt aaggaacaac tttctgctca ttgcctctat cttctcaaac atttcgaagc 1140 agttattttt tataagaaaa tataaaacag gccgactaaa ttcgatcttt ctctccccag 1200 ctgctagttt cttatctagc tgctttaggc agtctccaca gattgcagcc aggcccctat 1260 tctcaattcc atctgacttc tgacagcgct ctccatttct tatttgcagc ttagacatct 1320 tcactgagag caggagtaat tcattcaaat gacaatgagg tatctgaata tcacacaaac 1380 acttcaaatt ctgtttattg gaaatagatc tgctcctgcc ccatcataac aatccttttt 1440 atcttactta acaggggcaa gaaaatcttt cacttcattt cctatcatct caaatgagtt 1500 cctgtacatg aatgacttaa ggtaaccata tccaacaact tgaagccaac cagtccctgg 1560 tcctactaca gacgttaggg aacatatgtg aaaacctggt gtacaaccta aatcataact 1620 agacagaaga cagcactatt tcctggtcac atagaaagca gaatagcatc ctcacaccaa 1680 tgaggaaaat gtcatgaagg caggagagat catgactgag gtgatacttt taccaaagac 1740 ttgccagtga ttaatttctc aattagttag caaaaaatat ggctctctag tgaatttgtg 1800 tccacaccat tttccagatg ttttgatgtc acttaaatca atctaattat ttaagttaaa 1860 aaatgttaca gatcattgct ttttttcttt tttagaagac atcaaaacaa taggatttct 1920 atgaaatatt ctcacttcac agctgtgtca gttaaagtgc tttgggttat acataaagaa 1980 aacagactca agaaagtaag aacaggaatt tggagcttgc aacactgatg ttctttgtaa 2040 aaagagagac tttatccagg gattagattc tgtcacaagg cctggaactc tctcttctca 2100 gccttatttc cccaatatgg attagaatct tacactgcaa gcttcccaca agggtggaca 2160 ggtcctcacc atttgtttca gcaggaaaaa gagtctgtat gcatccgtga tatctaagtc 2220 acaattccag aagtgagctt tcctggctcc tattggtcgg acttaggtca ggtgtcacat 2280 ttccttttgg attagtctgt gattaatgaa tgggcccact ttgctcaccc attaagacaa 2340 taggcttcca ttctcgaagc tggaagcatg acatgtccca cagaaactgt aataagagag 2400 aacataggtt gctgtgtgga gaaacgaggc aaccggcaag tcataagatg acaaagtctt 2460 ggaaagtcta agtcagtggt tctcagcctt ccctaaaccc taaaccctaa accctaaacc 2520 ctaaacccta aaccctaaac ccctaaaccc taaaccctaa accctaaacc ctaaacccta 2580 accctaaacc ctaaacccta aaccctaaac cctaaaccct aaccctaacc ctaaccctaa 2640 ccctaaccta gccttcattg acgtctatcc ccaatcttag aaaaatcttc aaatcgattc 2700 tagaataact ggaagcaatt atcagaaatt gtataactgc ttattagctt attagcttat 2760 tagttaggat gtatgcacat tgatgacaac tagatgcagc accacaatca ctaccacgta 2820 ccaatcatat accaataatg tactaataat gtaccaataa ctatggttta taaagatggt 2880 gtcatttaaa tcaatattag ttccttatat tacactcttt ttaatgagcg gtgctgtctt 2940 tgcaggtgat accgatcgcg aagctggtgg gcctagtgga actgttgggc ctagtgaagc 3000 tggtgggcct agtgaagctg gtgggcctag tgaagctggt gggcctagtg aagctggtgg 3060 gcctagtgaa gctggtgggc ctagtgaagc tggtgggcct agtgaagctg gtgggcctag 3120 tggaactgtt gggcctagtg aagctggtgg gcctagtgaa gctggtgggc ctagtgaagc 3180 tggtgggcct agtgaagctg gttggcctag tgaagctggt tggcctagtg aagctggttg 3240 gcctagtgaa gctggttggc ctagtgaagc tggttggcct agtgaagctg gttggcctag 3300 tgaacgattt ggatatcagc ttctttggta ttctagaaga atagttatat ttaatgaaat 3360 ttatttatct catatatacg aacatagtgt tatgatattg gaacgagata gggtgaacga 3420 tggtcataaa gactacattg aagaaaaaac caaggagaag aataaattga aaaaagaatt 3480 ggaaaaatgt tttcctgaac aatattccct tatgaagaaa gaagaattgg ctagaataat 3540 tgataatgca tccactatct cttcaaaata taagttattg gttgatgaaa tatccaacaa 3600 agcctatggt acattggaag gtccagctgc tgatgatttt gaccatttcc gtaatatatg 3660 gaagtctatt gtacctaaaa atatgtttct atattgtgac ttattattaa aacatttaat 3720 ccgtttaacc cccagaaaga gctgaccaga caaaggttaa ctcttgaatc ccaggcatca 3780 gcctgggaat ccatcatggg actgatcaag accccctgaa tgtgggtgtc agtgaggagg 3840 cctaggtaat ctattgagcc tcgggcagca gatcagtacc catcccaatt atacacaatt 3900 gcagtgttgt ggtttcacag tgaataattg taggtcacag tccattatat tgatgtcaca 3960 gtttttaatt gtcatgtcac agtgcaagct agtgatgtca gagtgtataa ctgtgttcat 4020 agagaatgta ttgatgtcac agtcaataat cgtgatgtca tagtgcagta tattgatgtc 4080 acaatgtata attgtgatgt taaagtgcaa gatagtgaag tcacagtata taattgtgat 4140 gtcatattgc attataatga tgtcacactt tataattttt tacatacagc actatagtga 4200 tgtaacagcc aataattgtg atg 4223 46 294 PRT Babesia microti 46 Leu Trp Phe Ile Lys Met Val Ser Phe Lys Ser Ile Leu Val Pro Tyr 1 5 10 15 Ile Thr Leu Phe Leu Met Ser Gly Ala Val Phe Ala Gly Asp Thr Asp 20 25 30 Arg Glu Ala Gly Gly Pro Ser Gly Thr Val Gly Pro Ser Glu Ala Gly 35 40 45 Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu 50 55 60 Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro 65 70 75 80 Ser Glu Ala Gly Gly Pro Ser Gly Thr Val Gly Pro Ser Glu Ala Gly 85 90 95 Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu 100 105 110 Ala Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser Glu Ala Gly Trp Pro 115 120 125 Ser Glu Ala Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser Glu Ala Gly 130 135 140 Trp Pro Ser Glu Arg Phe Gly Tyr Gln Leu Leu Trp Tyr Ser Arg Arg 145 150 155 160 Ile Val Ile Phe Asn Glu Ile Tyr Leu Ser His Ile Tyr Glu His Ser 165 170 175 Val Met Ile Leu Glu Arg Asp Arg Val Asn Asp Gly His Lys Asp Tyr 180 185 190 Ile Glu Glu Lys Thr Lys Glu Lys Asn Lys Leu Lys Lys Glu Leu Glu 195 200 205 Lys Cys Phe Pro Glu Gln Tyr Ser Leu Met Lys Lys Glu Glu Leu Ala 210 215 220 Arg Ile Ile Asp Asn Ala Ser Thr Ile Ser Ser Lys Tyr Lys Leu Leu 225 230 235 240 Val Asp Glu Ile Ser Asn Lys Ala Tyr Gly Thr Leu Glu Gly Pro Ala 245 250 255 Ala Asp Asp Phe Asp His Phe Arg Asn Ile Trp Lys Ser Ile Val Pro 260 265 270 Lys Asn Asn Phe Leu Tyr Cys Asp Leu Leu Leu Lys His Leu Ile Arg 275 280 285 Leu Thr Pro Arg Lys Ser 290 47 30 PRT Artificial Sequence Synthetic peptide of repeat region of antigen BMNI-3 (SEQ ID NO3) 47 Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr Gly 1 5 10 15 Trp Thr Ser Gly Thr Gly Trp Pro Ser Glu Ala Gly Trp Ser 20 25 30 48 30 PRT Artificial Sequence Synthetic peptide of repeat region of antigen BMNI-3 (SEQ ID NO3) 48 Glu Ala Gly Gly Pro Ser Gly Thr Val Gly Pro Ser Gly Thr Gly Trp 1 5 10 15 Pro Ser Glu Ala Gly Trp Gly Ser Glu Ala Gly Trp Ser Ser 20 25 30 49 367 PRT Babesia microti 49 Met Val Ser Phe Lys Ser Ile Leu Val Pro Tyr Ile Thr Leu Phe Leu 1 5 10 15 Met Ser Gly Ala Val Phe Ala Ser Asp Thr Asp Pro Glu Ala Gly Gly 20 25 30 Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr Val Gly Pro Ser Glu Ala 35 40 45 Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr Gly Trp Pro Ser 50 55 60 Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly 65 70 75 80 Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr Gly Ser Glu Ala Gly Gly 85 90 95 Trp Pro Ser Gly Thr Gly Trp Pro Ser Glu Ala Gly Trp Ser Ser Glu 100 105 110 Arg Phe Gly Tyr Gln Leu Leu Pro Tyr Ser Arg Arg Ile Val Ile Phe 115 120 125 Asn Glu Val Cys Leu Ser Tyr Ile Tyr Lys His Ser Val Met Ile Leu 130 135 140 Glu Arg Asp Arg Val Asn Asp Gly His Lys Asp Tyr Ile Glu Glu Lys 145 150 155 160 Thr Lys Glu Lys Asn Lys Leu Lys Lys Glu Leu Glu Lys Cys Phe Pro 165 170 175 Glu Gln Tyr Ser Leu Met Lys Lys Glu Glu Leu Ala Arg Ile Phe Asp 180 185 190 Asn Ala Ser Thr Ile Ser Ser Lys Tyr Lys Leu Leu Val Asp Glu Ile 195 200 205 Ser Asn Lys Ala Tyr Gly Thr Leu Glu Gly Pro Ala Ala Asp Asn Phe 210 215 220 Asp His Phe Arg Asn Ile Trp Lys Ser Ile Val Leu Lys Asp Met Phe 225 230 235 240 Ile Tyr Cys Asp Leu Leu Leu Gln His Leu Ile Tyr Lys Phe Tyr Tyr 245 250 255 Asp Asn Thr Val Asn Asp Ile Lys Lys Asn Phe Asp Glu Ser Lys Ser 260 265 270 Lys Ala Leu Val Leu Arg Asp Lys Ile Thr Lys Lys Asp Gly Asp Tyr 275 280 285 Asn Thr His Phe Glu Asp Met Ile Lys Glu Leu Asn Ser Ala Ala Glu 290 295 300 Glu Phe Asn Lys Ile Val Asp Ile Met Ile Ser Asn Ile Gly Asp Tyr 305 310 315 320 Asp Glu Tyr Asp Ser Ile Ala Ser Phe Lys Pro Phe Leu Ser Met Ile 325 330 335 Thr Glu Ile Thr Lys Ile Thr Lys Val Ser Asn Val Ile Ile Pro Gly 340 345 350 Ile Lys Ala Leu Thr Leu Thr Val Phe Leu Ile Phe Ile Thr Lys 355 360 365 50 1908 DNA Babesia microti 50 aaaagattta atgaacatac tgacatgaat ggtattcatt attattatat tgatggtagt 60 ttacttgcga gtggcgaagt tacatctaat tttcgttata tttctaaaga atatgaatat 120 gagcatacag aattagcaaa agagcattgc aagaaagaaa aatgtgtaaa tgtggataac 180 attgaggata ataatttgaa aatatatgcg aaacagttta aatctgtagt tactactcca 240 gctgatgtag cgggtgtgtc agatggattt tttatacgtg gccaaaatct tggtgctgtg 300 ggcagtgtaa atgaacaacc taatactgtt ggtatgagtt tagaacaatt catcaagaac 360 gagctttatt cttttagtaa tgaaatttat catacaatat ctagtcaaat cagtaattct 420 ttcttaataa tgatgtctga tgcaattgtt aaacatgata actatatttt aaaaaaagaa 480 ggtgaaggct gtgaacaaat ctacaattat gaggaattta tagaaaagtt gaggggtgct 540 agaagtgagg ggaataatat gtttcaggaa gctctgataa ggtttaggaa tgctagtagt 600 gaagaaatgg ttaatgctgc aagttatcta tccgccgccc ttttcagata taaggaattt 660 gatgatgaat tattcaaaaa ggccaacgat aattttggac gcgatgatgg atatgatttt 720 gattatataa atacaaagaa agagttagtt atacttgcca gtgtgttgga tggtttggat 780 ttaataatgg aacgtttgat cgaaaatttc agtgatgtca ataatacaga tgatattaag 840 aaggcatttg acgaatgcaa atctaatgct attatattga agaaaaagat acttgacaat 900 gatgaagatt ataagattaa ttttagggaa atggtgaatg aagtaacatg tgcaaacaca 960 aaatttgaag ccctaaatga tttgataatt tccgactgtg agaaaaaagg tattaagata 1020 aacagagatg tgatttcaag ctacaaattg cttctttcca caatcaccta tattgttgga 1080 gctggagttg aagctgtaac tgttagtgtg tctgctacat ctaatggaac tgaatctggt 1140 ggagctggta gtggaactgg aactagtgtg tctgctacat ctactttaac tggtaatggt 1200 ggaactgaat ctggtggaac agctggaact actacgtcta gtggaactga agctggtgga 1260 actagtggaa ctactacgtc tagtggagct gctagtggta aagctggaac tggaacagct 1320 ggaactacta cgtctagtga aggtgctggt agtgataaag ctggaactgg aactagtgga 1380 actactacgt ctagtggaac tggtgctggt ggagctggta gtggtggacc tagtggacat 1440 gcttctaatg caaaaattcc tggaataatg acactaactc tatttgcatt attaacattt 1500 attgtaaatt gaatgaaaca catgatttat acattattat atattacaaa atttacacat 1560 tatttatgta tgaacgaacg aacatcttgc tcttaaataa agaaattgag atatatatgg 1620 aaatagatta aagtaacatg agaaagatga atataatatt agaatatgaa atttaacaga 1680 aataaaatga agtaaaagag tgtattttgt aataatttat aataaattag tatacaatga 1740 ttatattaca aatggctatt aaatatttta ttaattaaat attgattagt aatgatatta 1800 tgtatgtaca tgttagggtt gattgttata cattgtgaat atattatata attgtatatt 1860 atattgattg atataatgta gaggatattt ttttaaatag tatttaat 1908 51 1460 DNA Babesia microti 51 aatccaacat ctagcctagt tagtatatat aggttaatat cacattatag attatctttg 60 gatgattggt tattatataa catgtcgctg aatgacgatt attttgctag ataatataac 120 taccggtgat tctgaggacc tactttaaag agaataatta acatatctac cagaatcagt 180 tccaatttat gtattttaaa gctaatcact actcgaaaac tacggtgaaa atggaaaaac 240 aagtggaagc tgtatgtcgt ggaaagtcac tacattttat gtgggcaaat ttaataattc 300 taaatactat gtttttgatg ttaaaaagcg aaaaacacac tttaatgcac attttaacat 360 catctgtata atatatatat cagcgttgaa atcatatggc aaaggtaata aagcgttaca 420 ttttgagcga ataaaggcac atatgcaaac gtatgaagcc ttgtatattt gtggaattat 480 attatgctag taatttgtga ttaataatgg caatatttat atacaaatat tcgagcgttc 540 tattatatgc atgcacataa ttaatcacaa actctcatat catggggcgg tttcgcccat 600 cataaacatt actgttagca ctctggtaga ttagcatggt gaatctctcg atacctgggc 660 tactgttgct ttccgcatat tccttaaatt ctgcaagtgc gggggatgta tatgagatat 720 cttctggtaa tccacccgac atagagccaa catctacttc tctagaaaca aatgtagtta 780 ccaactatat tccagaaccc aatgcggatt cagaatctgt acatgttgaa atccaggaac 840 atgataacat caatccacaa gacgcttgcg atagtgagcc gctcgaacaa atggattctg 900 ataccagggt gttgcccgaa agtttggatg agggggtacc acaccaattc tctagattag 960 ggcaccactc agacatggca tctgatataa atgatgaaga accatcattt aaaatcggcg 1020 agaatgacat aattcaacca ccctgggaag atacagctcc ataccattca atagatgatg 1080 aagagcttga caacttaatg agactaacgg cgcaagaaac aagtgacgat catgaagaag 1140 ggaatggcaa actcaatacg aataaaagtg agaagactga aagaaaatcg catgatactc 1200 agacaccgca agaaatatat gaagagcttg acaacttact gagactaacg gcacaagaaa 1260 tatatgaaga gcgtaaagaa gggcatggca aacccaatac gaataaaagt gagaaggctg 1320 aaagaaaatc gcatgatact cagacaacgc aagaaatatg tgaagagtgt gaagaagggc 1380 atgacaaaat caataagaat aaaagtggaa atgctggaat aaaatcgtat gatactcaga 1440 caccgcagga aacaagtgac 1460 52 503 PRT Babesia microti 52 Lys Arg Phe Asn Glu His Thr Asp Met Asn Gly Ile His Tyr Tyr Tyr 1 5 10 15 Ile Asp Gly Ser Leu Leu Ala Ser Gly Glu Val Thr Ser Asn Phe Arg 20 25 30 Tyr Ile Ser Lys Glu Tyr Glu Tyr Glu His Thr Glu Leu Ala Lys Glu 35 40 45 His Cys Lys Lys Glu Lys Cys Val Asn Val Asp Asn Ile Glu Asp Asn 50 55 60 Asn Leu Lys Ile Tyr Ala Lys Gln Phe Lys Ser Val Val Thr Thr Pro 65 70 75 80 Ala Asp Val Ala Gly Val Ser Asp Gly Phe Phe Ile Arg Gly Gln Asn 85 90 95 Leu Gly Ala Val Gly Ser Val Asn Glu Gln Pro Asn Thr Val Gly Met 100 105 110 Ser Leu Glu Gln Phe Ile Lys Asn Glu Leu Tyr Ser Phe Ser Asn Glu 115 120 125 Ile Tyr His Thr Ile Ser Ser Gln Ile Ser Asn Ser Phe Leu Ile Met 130 135 140 Met Ser Asp Ala Ile Val Lys His Asp Asn Tyr Ile Leu Lys Lys Glu 145 150 155 160 Gly Glu Gly Cys Glu Gln Ile Tyr Asn Tyr Glu Glu Phe Ile Glu Lys 165 170 175 Leu Arg Gly Ala Arg Ser Glu Gly Asn Asn Met Phe Gln Glu Ala Leu 180 185 190 Ile Arg Phe Arg Asn Ala Ser Ser Glu Glu Met Val Asn Ala Ala Ser 195 200 205 Tyr Leu Ser Ala Ala Leu Phe Arg Tyr Lys Glu Phe Asp Asp Glu Leu 210 215 220 Phe Lys Lys Ala Asn Asp Asn Phe Gly Arg Asp Asp Gly Tyr Asp Phe 225 230 235 240 Asp Tyr Ile Asn Thr Lys Lys Glu Leu Val Ile Leu Ala Ser Val Leu 245 250 255 Asp Gly Leu Asp Leu Ile Met Glu Arg Leu Ile Glu Asn Phe Ser Asp 260 265 270 Val Asn Asn Thr Asp Asp Ile Lys Lys Ala Phe Asp Glu Cys Lys Ser 275 280 285 Asn Ala Ile Ile Leu Lys Lys Lys Ile Leu Asp Asn Asp Glu Asp Tyr 290 295 300 Lys Ile Asn Phe Arg Glu Met Val Asn Glu Val Thr Cys Ala Asn Thr 305 310 315 320 Lys Phe Glu Ala Leu Asn Asp Leu Ile Ile Ser Asp Cys Glu Lys Lys 325 330 335 Gly Ile Lys Ile Asn Arg Asp Val Ile Ser Ser Tyr Lys Leu Leu Leu 340 345 350 Ser Thr Ile Thr Tyr Ile Val Gly Ala Gly Val Glu Ala Val Thr Val 355 360 365 Ser Val Ser Ala Thr Ser Asn Gly Thr Glu Ser Gly Gly Ala Gly Ser 370 375 380 Gly Thr Gly Thr Ser Val Ser Ala Thr Ser Thr Leu Thr Gly Asn Gly 385 390 395 400 Gly Thr Glu Ser Gly Gly Thr Ala Gly Thr Thr Thr Ser Ser Gly Thr 405 410 415 Glu Ala Gly Gly Thr Ser Gly Thr Thr Thr Ser Ser Gly Ala Ala Ser 420 425 430 Gly Lys Ala Gly Thr Gly Thr Ala Gly Thr Thr Thr Ser Ser Glu Gly 435 440 445 Ala Gly Ser Asp Lys Ala Gly Thr Gly Thr Ser Gly Thr Thr Thr Ser 450 455 460 Ser Gly Thr Gly Ala Gly Gly Ala Gly Ser Gly Gly Pro Ser Gly His 465 470 475 480 Ala Ser Asn Ala Lys Ile Pro Gly Ile Met Thr Leu Thr Leu Phe Ala 485 490 495 Leu Leu Thr Phe Ile Val Asn 500 53 275 PRT Babesia microti 53 Met Val Asn Leu Ser Ile Pro Gly Leu Leu Leu Leu Ser Ala Tyr Ser 1 5 10 15 Leu Asn Ser Ala Ser Ala Gly Asp Val Tyr Glu Ile Ser Ser Gly Asn 20 25 30 Pro Pro Asp Ile Glu Pro Thr Ser Thr Ser Leu Glu Thr Asn Val Val 35 40 45 Thr Asn Tyr Ile Pro Glu Pro Asn Ala Asp Ser Glu Ser Val His Val 50 55 60 Glu Ile Gln Glu His Asp Asn Ile Asn Pro Gln Asp Ala Cys Asp Ser 65 70 75 80 Glu Pro Leu Glu Gln Met Asp Ser Asp Thr Arg Val Leu Pro Glu Ser 85 90 95 Leu Asp Glu Gly Val Pro His Gln Phe Ser Arg Leu Gly His His Ser 100 105 110 Asp Met Ala Ser Asp Ile Asn Asp Glu Glu Pro Ser Phe Lys Ile Gly 115 120 125 Glu Asn Asp Ile Ile Gln Pro Arg Trp Glu Asp Thr Ala Pro Tyr His 130 135 140 Ser Ile Asp Asp Glu Glu Leu Asp Asn Leu Met Arg Leu Thr Ala Gln 145 150 155 160 Glu Thr Ser Asp Asp His Glu Glu Gly Asn Gly Lys Leu Asn Thr Asn 165 170 175 Lys Ser Glu Lys Thr Glu Arg Lys Ser His Asp Thr Gln Thr Pro Gln 180 185 190 Glu Ile Tyr Glu Glu Leu Asp Asn Leu Leu Arg Leu Thr Ala Gln Glu 195 200 205 Ile Tyr Glu Glu Arg Lys Glu Gly His Gly Lys Pro Asn Thr Asn Lys 210 215 220 Ser Glu Lys Ala Glu Arg Lys Ser His Asp Thr Gln Thr Thr Gln Glu 225 230 235 240 Ile Cys Glu Glu Cys Glu Glu Gly His Asp Lys Ile Asn Lys Asn Lys 245 250 255 Ser Gly Asn Ala Gly Ile Lys Ser Tyr Asp Thr Gln Thr Pro Gln Glu 260 265 270 Thr Ser Asp 275 54 22 DNA Artificial Sequence PCR Primer 54 tttgcaggtg ataccgatcg cg 22 55 24 DNA Artificial Sequence PCR Primer 55 tggtattcta gaagaatagt tata 24 56 306 DNA Babesia microti 56 ttgcaggtga taccgatcgc gaagctggtg ggcctagtgg aactgttggg cccagtgaag 60 ctggtgggcc tagtgaagct ggtgggccta gtggaactgt tgggcccagt gaagctggtg 120 ggcctagtga agctggtggg cctagtggaa ctggttggcc tagtgaagct ggtgggccta 180 gtggaactgt tgggcccagt gaagctggtg ggcctagtga agctggtggg cctagtggaa 240 ctggttggcc tagtggaact ggttggccta gtgaagttgg ttggcccatt gaaccatttg 300 gatatc 306 57 318 DNA Babesia microti 57 ttgcaggtga taccgatcgc gaagctggtg ggcctagtgg aactgttggg cccagtgaag 60 ctggtgggcc tagtgaagct ggtgggccta gtggaactgt tgggcccagt gaagctggtg 120 ggcctagtga agctggtggg cctagtggaa ctggttggcc tagtgaagct ggtgggccta 180 gtggaactgt tgggcccagt gaagctggtg ggcctagtga agctggtggg cctagtggaa 240 ctggttggcc tagtggaact ggttggccta gtgaagttgg ttggcctaat gaaccatttg 300 gatatcacct tctttggt 318 58 358 DNA Babesia microti 58 ttgcaggtga taccgatcgc gaagctggtg ggcctagtgg aactgttggg cctagtgaag 60 ctggtgggcc tagtgaagct ggtgggccta gtgaagctgg tgggcctagt gaagctggtg 120 ggcctagtga agctggtggg cctagtgaag ctggtgggcc tagtgaagct ggtgggccta 180 gtgaagctgg tgggcctagt gaagctggtg ggcctagtga agctggttgg cctagtgaag 240 ctggttggcc tagtgaagct ggtgggccta gtggaactgg ttggcctagt gaagctggtt 300 ggcctagtga agctggttgg cctagtgaag ctggttggcc tagtgaagct ggttggcc 358 59 409 DNA Babesia microti 59 tgcaggtgat accgatcgcg aagctggtgg gcctagtgga actgttgggc ctagtgaagc 60 tggtgggcct agtgaagctg gtgggcctag tgaagctggt gggcctagtg aagctggtgg 120 gcctagtgaa gctggtgggc ctagtgaagc tggtgggcct agtgaagctg gtgggcctag 180 tgaagctggt gggcctagtg aagctggtgg gcctagtgaa gctggttggc ctagtgaagc 240 tggttggcct agtgaagctg gtgggcctag tggaactggt tggcctagtg aagctggttg 300 gcctagtgaa gctggttggc ctagtgaagc tggttggcct agtgaagctg gttggcctag 360 tgaacgattt ggatatcagc ttctttggta ttctagaaga atagttata 409 60 351 DNA Babesia microti 60 gtgaagctgg tgggcctagt ggaactgttg ggcctagtga agctggtggg cctagtgaag 60 ctggtgggcc tagtgaagct ggtgggccta gtgaagctgg tgggcctagt gaagctggtg 120 ggcctagtga agctggtggg cctagtgaag ctggtgggcc tagtgaagct ggtgggccta 180 gtgaagctgg tgggcctagt gaagctggtt ggcctagtga agctggttgg cctagtgaag 240 ctggtgggcc tagtggaact ggttggccta gtgaagctgg ttggcctagt gaagctggtt 300 ggcctagtga agctggttgg cctagtgaag ctggttggcc tagtgaacga t 351 61 410 DNA Babesia microti 61 aggtgatacc gatcgcgaag ctggtgggcc tagtggaact gttgggccta gtgaagctgg 60 tgggcctagt gaagctggtg ggcctagtga agctggtggg cctagtgaag ctggtgggcc 120 tagtgaagct ggtgggccta gtgaagctgg tgggcctagt gaagctggtg ggcctagtga 180 agctggtggg cctagtgaag ctggtgggcc tagtgaagct ggtgggccta gtgaagctgg 240 ttggcctagt gaagctggtt ggcctagtga agctggtggg cctagtggaa ctggttggcc 300 tagtgaagct ggttggccta gtgaagctgg ttggcctagt gaagctggtt ggcctagtga 360 agctggttgg cctagtgaac gatttggata tcagcttctt tggtattcta 410 62 416 DNA Babesia microti 62 ttgcaggtga taccgatcgc gaagctggtg ggcctagtgg aactgttggg cctagtgaag 60 ctggtgggcc tagtgaagct ggtgggccta gtgaagctgg tgggcctagt gaagctggtg 120 ggcctagtga agctggtggg cctagtgaag ctggtgggcc tagtgaagct ggtgggccta 180 gtgaagctgg tgggcctagt gaagctggtg ggcctagtga agctggtggg cctagtgaag 240 ctggtgggcc tagtgaagct ggttggccta gtgaagctgg ttggcctagt gaagctggtg 300 ggcctagtgg aactggttgg cctagtgaag ctggttggcc tagtgaagct ggttggccta 360 gtgaagctgg ttggcctagt gaagctggtt ggcctagtga acgatttgga tatcag 416 63 356 DNA Babesia microti 63 ttgcaggtga taccgatcgc gaagctggtg ggcctagtgg aactgttggg cctagtgaag 60 ctggtgggcc tagtgaagct ggtgggccta gtgaagctgg tgggcctagt gaagctggtg 120 ggcctagtga agctggtggg cctagtgaag ctggtgggcc tagtgaagct ggtgggccta 180 gtgaagctgg tgggcctagt ggaactggtt ggcctagtga agctggttgg cctagtgaag 240 ctggttggcc tagtgaagct ggttggccta gtgaagctgg ttggcctagt gaagctggtt 300 ggcctagtga acgatttgga tatcagcttc tttggtattc tagaagaata gttata 356 64 285 DNA Babesia microti 64 ttgcaggtga taccgatcgc gaagctggtg ggcctagtgg aactgttggg cctagtgaag 60 ctggtgggcc tagtgaagct ggtgggccta gtgaagctgg tgggcctagt gaagctggtg 120 ggcctagtga agctggtggg cctagtgaag ctggtgggcc tagtgaagct ggtgggccta 180 gtggaactgg ttggcctagt gaagctggtt ggcctagtga agctggttgg cctagtgaag 240 ctggttggcc tagtgaagct ggttggccta gtgaagctgg ttggc 285 65 342 DNA Babesia microti 65 ttgcaggtga taccgatcgc gaagctggtg ggcctagtgg aactgttggg cctagtgaag 60 ctggtgggcc tagtgaagct ggtgggccta gtgaagctgg tgggcctagt gaagctggtg 120 ggcctagtga agctggtggg cctagtgaag ctggtgggcc tagtgaagct ggtgggccta 180 gtgaagctgg tgggcctagt ggaactggtt ggcctagtga agctggttgg cctagtgaag 240 ctggttggcc tagtgaagct ggttggccta gtgaagctgg ttggcctagt gaagctggtt 300 ggcctagtga acgatttgga tatcagcttc tttggtattc ta 342 66 363 DNA Babesia microti 66 ttgcaggtga taccgatcgc gaagctggtg ggcctagtgg aactgttggg cctagtgaag 60 ctggtgggcc tagtgaagct ggtgggccta gtgaagctgg tgggcctagt gaagctggtg 120 ggcctagtga agctggtggg cctagtgaag ctggtgggcc tagtgaagct ggtgggccta 180 gtgaagctgg tgggcctagt gaagctggtg ggcctagtgg aactggttgg cctagtgaag 240 ctggttggcc tagtgaagct ggttggccta gtgaagctgg ttggcctagt gaagctggtt 300 ggcctagtga agctggttgg cctagtgaac gatttggata tcagcttctt tggtattcta 360 gaa 363 67 363 DNA Babesia microti 67 ttgcaggtga taccgatcgc gaagctggtg ggcctagtgg aactgttggg cctagtgaag 60 ctggtgggcc tagtgaagct ggtgggccta gtgaagctgg tgggcctagt gaagctggtg 120 ggcctagtga agctggtggg cctagtgaag ctggtgggcc tagtgaagct ggtgggccta 180 gtgaagctgg tgggcctagt gaagctggtg ggcctagtgg aactggttgg cctagtgaag 240 ctggttggcc tagtgaagct ggttggccta gtgaagctgg ttggcctagt gaagctggtt 300 ggcctagtga agctggttgg cctagtgaac gatttggata tcagcttctt tggtattcta 360 gaa 363 68 101 PRT Babesia microti 68 Ala Gly Asp Thr Asp Arg Glu Ala Gly Gly Pro Ser Gly Thr Val Gly 1 5 10 15 Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr 20 25 30 Val Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser 35 40 45 Gly Thr Gly Trp Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr Val Gly 50 55 60 Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr 65 70 75 80 Gly Trp Pro Ser Gly Thr Gly Trp Pro Ser Glu Val Gly Trp Pro Ile 85 90 95 Glu Pro Phe Gly Tyr 100 69 105 PRT Babesia microti 69 Ala Gly Asp Thr Asp Arg Glu Ala Gly Gly Pro Ser Gly Thr Val Gly 1 5 10 15 Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr 20 25 30 Val Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser 35 40 45 Gly Thr Gly Trp Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr Val Gly 50 55 60 Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr 65 70 75 80 Gly Trp Pro Ser Gly Thr Gly Trp Pro Ser Glu Val Gly Trp Pro Asn 85 90 95 Glu Pro Phe Gly Tyr His Leu Leu Trp 100 105 70 118 PRT Babesia microti 70 Ala Gly Asp Thr Asp Arg Glu Ala Gly Gly Pro Ser Gly Thr Val Gly 1 5 10 15 Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala 20 25 30 Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser 35 40 45 Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly 50 55 60 Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Trp Pro Ser Glu Ala 65 70 75 80 Gly Trp Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr Gly Trp Pro Ser 85 90 95 Glu Ala Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser Glu Ala Gly Trp 100 105 110 Pro Ser Glu Ala Gly Trp 115 71 136 PRT Babesia microti 71 Ala Gly Asp Thr Asp Arg Glu Ala Gly Gly Pro Ser Gly Thr Val Gly 1 5 10 15 Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala 20 25 30 Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser 35 40 45 Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly 50 55 60 Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Trp Pro Ser Glu Ala 65 70 75 80 Gly Trp Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr Gly Trp Pro Ser 85 90 95 Glu Ala Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser Glu Ala Gly Trp 100 105 110 Pro Ser Glu Ala Gly Trp Pro Ser Glu Arg Phe Gly Tyr Gln Leu Leu 115 120 125 Trp Tyr Ser Arg Arg Ile Val Ile 130 135 72 116 PRT Babesia microti 72 Glu Ala Gly Gly Pro Ser Gly Thr Val Gly Pro Ser Glu Ala Gly Gly 1 5 10 15 Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala 20 25 30 Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser 35 40 45 Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly 50 55 60 Pro Ser Glu Ala Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser Glu Ala 65 70 75 80 Gly Gly Pro Ser Gly Thr Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser 85 90 95 Glu Ala Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser Glu Ala Gly Trp 100 105 110 Pro Ser Glu Arg 115 73 136 PRT Babesia microti 73 Gly Asp Thr Asp Arg Glu Ala Gly Gly Pro Ser Gly Thr Val Gly Pro 1 5 10 15 Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly 20 25 30 Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu 35 40 45 Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro 50 55 60 Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly 65 70 75 80 Trp Pro Ser Glu Ala Gly Trp Pro Ser Glu Ala Gly Gly Pro Ser Gly 85 90 95 Thr Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser Glu Ala Gly Trp Pro 100 105 110 Ser Glu Ala Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser Glu Arg Phe 115 120 125 Gly Tyr Gln Leu Leu Trp Tyr Ser 130 135 74 138 PRT Babesia microti 74 Ala Gly Asp Thr Asp Arg Glu Ala Gly Gly Pro Ser Gly Thr Val Gly 1 5 10 15 Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala 20 25 30 Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser 35 40 45 Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly 50 55 60 Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala 65 70 75 80 Gly Gly Pro Ser Glu Ala Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser 85 90 95 Glu Ala Gly Gly Pro Ser Gly Thr Gly Trp Pro Ser Glu Ala Gly Trp 100 105 110 Pro Ser Glu Ala Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser Glu Ala 115 120 125 Gly Trp Pro Ser Glu Arg Phe Gly Tyr Gln 130 135 75 118 PRT Babesia microti 75 Ala Gly Asp Thr Asp Arg Glu Ala Gly Gly Pro Ser Gly Thr Val Gly 1 5 10 15 Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala 20 25 30 Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser 35 40 45 Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly 50 55 60 Pro Ser Gly Thr Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser Glu Ala 65 70 75 80 Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser 85 90 95 Glu Ala Gly Trp Pro Ser Glu Arg Phe Gly Tyr Gln Leu Leu Trp Tyr 100 105 110 Ser Arg Arg Ile Val Ile 115 76 94 PRT Babesia microti 76 Ala Gly Asp Thr Asp Arg Glu Ala Gly Gly Pro Ser Gly Thr Val Gly 1 5 10 15 Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala 20 25 30 Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser 35 40 45 Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr Gly Trp 50 55 60 Pro Ser Glu Ala Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser Glu Ala 65 70 75 80 Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser Glu Ala Gly Trp 85 90 77 113 PRT Babesia microti 77 Ala Gly Asp Thr Asp Arg Glu Ala Gly Gly Pro Ser Gly Thr Val Gly 1 5 10 15 Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala 20 25 30 Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser 35 40 45 Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly 50 55 60 Pro Ser Gly Thr Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser Glu Ala 65 70 75 80 Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser 85 90 95 Glu Ala Gly Trp Pro Ser Glu Arg Phe Gly Tyr Gln Leu Leu Trp Tyr 100 105 110 Ser 78 120 PRT Babesia microti 78 Ala Gly Asp Thr Asp Arg Glu Ala Gly Gly Pro Ser Gly Thr Val Gly 1 5 10 15 Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala 20 25 30 Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser 35 40 45 Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly 50 55 60 Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr Gly Trp Pro Ser Glu Ala 65 70 75 80 Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser 85 90 95 Glu Ala Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser Glu Arg Phe Gly 100 105 110 Tyr Gln Leu Leu Trp Tyr Ser Arg 115 120 79 120 PRT Babesia microti 79 Ala Gly Asp Thr Asp Arg Glu Ala Gly Gly Pro Ser Gly Thr Val Gly 1 5 10 15 Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala 20 25 30 Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser 35 40 45 Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly Pro Ser Glu Ala Gly Gly 50 55 60 Pro Ser Glu Ala Gly Gly Pro Ser Gly Thr Gly Trp Pro Ser Glu Ala 65 70 75 80 Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser 85 90 95 Glu Ala Gly Trp Pro Ser Glu Ala Gly Trp Pro Ser Glu Arg Phe Gly 100 105 110 Tyr Gln Leu Leu Trp Tyr Ser Arg 115 120 80 29 DNA Artificial Sequence PCR Primer 80 cagagcagta ctgatgatat taagaaggc 29 81 43 DNA Artificial Sequence PCR Primer 81 caatatgaat tcagtgaata tttacaataa atgttaataa tgc 43 82 32 DNA Artificial Sequence PCR Primer 82 cataacaata ttccagaacc caatgcggat tc 32 83 32 DNA Artificial Sequence PCR Primer 83 cgctagaatt cattagaaag ccttaaacat gc 32 

1. An isolated polypeptide comprising an immunogenic portion of a B. microti antigen or a variant thereof, wherein said antigen comprises an amino acid sequence encoded by a DNA sequence selected from the group consisting of: (a) sequences recited in SEQ ID NO: 1-17, 37, 40, 42, 45, 50 and 51; (b) the complements of said sequences; and (c) DNA sequences that hybridize to a sequence of (a) or (b) under moderately stringent conditions.
 2. An isolated antigenic epitope of a B. microti antigen comprising the amino acid sequence -X₁-X₂-X₃-X₄-X₅-Ser-, wherein X₁ is Glu or Gly, X₂ is Ala or Thr, X₃ is Gly or Val, X₄ is Trp or Gly and X₅ is Pro or Ser.
 3. An isolated antigenic epitope according to claim 2 wherein X₁ is Glu, X₂ is Ala and X₃ is Gly.
 4. An isolated antigenic epitope according to claim 2 wherein X₁ is Gly, X₂ is Thr and X₅ is Pro.
 5. An isolated polypeptide comprising at least two contiguous antigenic epitopes according to claim
 2. 6. An isolated antigenic epitope of a B. microti antigen comprising an amino acid sequence selected from the group consisting of SEQ ID NO: 36 and
 39. 7. An isolated polypeptide comprising at least two contiguous antigenic epitopes according to claim
 6. 8. An isolated polynucleotide comprising a DNA sequence encoding a polypeptide according to any one of claims 1, 5 and
 7. 9. A recombinant expression vector comprising a polynucleotide according to claim
 8. 10. A host cell transformed with an expression vector according to claim
 9. 11. The host cell of claim 10 wherein the host cell is selected from the group consisting of E. coli, yeast and mammalian cells.
 12. A fusion protein comprising at least two polypeptides according to any one of claims 1, 5 and
 7. 13. A fusion protein comprising a polypeptide having an amino acid sequence of SEQ ID NO:
 32. 14. The fusion protein of claim 13 further comprising a polypeptide having an amino acid sequence of SEQ ID NO:
 52. 15. A fusion protein comprising two or more antigenic epitopes according to claim 2 or
 6. 16. A fusion protein comprising at least one polypeptide according to any one of claims 1, 5 and 7, and at least one antigenic epitope according to any one of claims 2 and
 6. 17. A method for detecting B. microti infection in a patient, comprising: (a) obtaining a sample from the patient; (b) contacting the sample with at least one polypeptide comprising an immunogenic portion of a B. microti antigen; and (c) detecting the presence of antibodies that bind to the polypeptide.
 18. A method for detecting B. microti infection in a patient, comprising: (a) obtaining a sample from the patient; (b) contacting the sample with at least one antigenic epitope according to any one of claims 2 and 6; and (c) detecting the presence of antibodies that bind to the antigenic epitope.
 19. The method of claim 18 wherein the antigenic epitope is bound to a solid support.
 20. The method of claim 19 wherein the solid support comprises nitrocellulose, latex or a plastic material.
 21. A method for detecting B. microti infection in a patient, comprising: (a) obtaining a sample from the patient; (b) contacting the sample with at least one polypeptide according to any one of claims 1, 5 and 7; and (c) detecting the presence of antibodies that bind to the polypeptide.
 22. A method for detecting B. microti infection in a patient, comprising: (a) obtaining a sample from the patient; (b) contacting the sample with at least one polypeptide according to any one of claims 1, 5 and 7, and at least one antigenic epitope according to any one of claims 2 and 6; and (c) detecting the presence of antibodies that bind to the polypeptide or antigenic epitope.
 23. A method for detecting B. microti infection in a patient, comprising: (a) obtaining a sample from the patient; (b) contacting the sample with a fusion protein according to any one of claims 12-16; and (c) detecting the presence of antibodies that bind to the fusion protein.
 24. The method of claim 17, 18, 21, 22 or 23 wherein the biological sample is selected from the group consisting of whole blood, serum, plasma, saliva, cerebrospinal fluid and urine.
 25. The method of claim 24 wherein the biological sample is whole blood.
 26. A method for detecting B. microti infection in a biological sample, comprising: (a) contacting the sample with at least two oligonucleotide primers in a polymerase chain reaction, wherein at least one of the oligonucleotide primers is specific for a DNA molecule according to claim 8; and (b) detecting in the sample a DNA sequence that amplifies in the presence of the first and second oligonucleotide primers.
 27. The method of claim 26 wherein at least one of the oligonucleotide primers comprises at least about 10 contiguous nucleotides of a DNA molecule according to claim
 8. 28. A method for detecting B. microti infection in a biological sample, comprising: (a) contacting the sample with one or more oligonucleotide probes specific for a DNA molecule according to claim 8; and (b) detecting in the sample a DNA sequence that hybridizes to the oligonucleotide probe.
 29. The method of claim 28 wherein the probe comprises at least about 15 contiguous nucleotides of a DNA molecule according to claim
 8. 30. The method of claim 26 or 28 wherein the biological sample is selected from the group consisting of whole blood, sputum, serum, plasma, saliva, cerebrospinal fluid and urine.
 31. A method for detecting B. microti infection in a biological sample, comprising: (a) contacting the biological sample with a binding agent which is capable of binding to a polypeptide comprising an immunogenic portion of a B. microti antigen; and (b) detecting in the sample a polypeptide that binds to the binding agent, thereby detecting B. microti infection in the biological sample.
 32. A method for detecting B. microti infection in a biological sample, comprising: (a) contacting the biological sample with a binding agent which is capable of binding to a polypeptide according to any one of claims 1, 5 and 7; and (b) detecting in the sample a polypeptide that binds to the binding agent, thereby detecting B. microti infection in the biological sample.
 33. A method of detecting B. microti infection in a biological sample, comprising: (a) contacting the biological sample with a binding agent which is capable of binding to an antigenic epitope according to any one of claims 2 and 6; and (b) detecting in the sample an antigenic epitope that binds to the binding agent, thereby detecting B. microti infection in the biological sample.
 34. A method of detecting B. microti infection in a biological sample, comprising: (a) contacting the biological sample with a first binding agent which is capable of binding to a polypeptide according to any one of claims 1, 5 and 7, and a second binding agent which is capable of binding to an antigenic epitope according to any one of claims 2 and 6; and (b) detecting in the sample a polypeptide that binds to the first binding agent or an antigenic epitope that binds to the second binding agent, thereby detecting B. microti infection in the biological sample.
 35. A method of detecting B. microti infection in a biological sample, comprising: (a) contacting the biological sample with a binding agent which is capable of binding to a fusion protein according to any one of claims 12-16; and (b) detecting in the sample a polypeptide that binds to the binding agent, thereby detecting B. microti infection in the biological sample.
 36. The method of claim 32, 33, 34 or 35 wherein the binding agent is a monoclonal antibody.
 37. The method of claim 32, 33, 34 or 35 wherein the binding agent is a polyclonal antibody.
 38. A diagnostic kit comprising: (a) at least one polypeptide comprising an immunogenic portion of a B. microti antigen; and (b) a detection reagent.
 39. A diagnostic kit comprising (a) at least one polypeptide according to any one of claims 1, 5 and 7; and (b) a detection reagent.
 40. The kit of any one of claims 38 and 39 wherein the polypeptide is immobilized on a solid support.
 41. The kit of claim 40 wherein the solid support is selected from the group consisting of nitrocellulose, latex, and plastic materials.
 42. A diagnostic kit comprising: (a) at least one antigenic epitope according to any one of claims 2 and 6; and (b) a detection reagent.
 43. The kit of claim 42 wherein the antigenic epitope is immobilized on a solid support.
 44. The kit of claim 43 wherein the solid support is selected from the group consisting of nitrocellulose, latex, and plastic materials.
 45. A diagnostic kit comprising: (a) at least one antigenic epitope according to any one of claims 2 and 6; (b) at least one polypeptide according to any one of claims 1, 5 and 7; and (c) a detection reagent.
 46. A diagnostic kit comprising: (a) at least one fusion protein according to any one of claims 12-16; and (b) a detection reagent.
 47. The kit of any one of claims 38, 39, 42, 45 and 46 wherein the detection reagent comprises a reporter group conjugated to a binding agent.
 48. The kit of claim 47 wherein the binding agent is selected from the group consisting of anti-immunoglobulins, Protein G, Protein A and lectins.
 49. The kit of claim 47 wherein the reporter group is selected from the group consisting of radioisotopes, fluorescent groups, luminescent groups, enzymes, biotin and dye particles.
 50. A diagnostic kit comprising at least one polymerase chain reaction primer, the primer being specific for a DNA molecule according to claim
 8. 51. The kit of claim 50 wherein the polymerase chain reaction primer comprises at least about 10 contiguous nucleotides of a DNA molecule according to claim
 8. 52. A diagnostic kit comprising at least one oligonucleotide probe, the oligonucleotide probe being specific for a DNA molecule according to claim
 8. 53. The kit of claim 52 wherein the oligonucleotide probe comprises at least about 15 contiguous nucleotides of a DNA molecule according to claim
 8. 54. A monoclonal antibody that binds to a polypeptide according to any one of claims 1, 5 and
 7. 55. A monoclonal antibody that binds to an antigenic epitope according to any one of claims 2 and
 6. 56. A polyclonal antibody that binds to a polypeptide according to any one of claims 1, 5 and
 7. 57. A polyclonal antibody that binds to an antigenic epitope according to any one of claims 2 and
 6. 58. A pharmaceutical composition comprising at least one polypeptide according to any one of claims 1, 5 and 7, and a physiologically acceptable carrier.
 59. A pharmaceutical composition comprising at least one DNA molecule according to claim 8 and a physiologically acceptable carrier.
 60. A pharmaceutical composition comprising at least one antigenic epitope according to any one of claims 2 and 6, and a physiologically acceptable carrier.
 61. A vaccine comprising at least one polypeptide according to any one of claims 1, 5 and 7, and a non-specific immune response enhancer.
 62. A vaccine comprising at least one DNA molecule according to claim 8 and a non-specific immune response enhancer.
 63. A vaccine comprising at least one antigenic epitope according to any one of claims 2 and 6, and a non-specific immune response enhancer.
 64. The vaccine of any one of claims 61-63 wherein the non-specific immune response enhancer is an adjuvant.
 65. A method for inducing protective immunity in a patient, comprising administering to a patient a pharmaceutical composition according to any one of claims 58-60.
 66. A method for inducing protective immunity in a patient, comprising administering to a patient a vaccine according to any one of claims 61-63. 